a16zOren Cass & Noah Smith Debate the True Impact of Tariffs
CHAPTERS
Free trade with China: extension of free markets or distortion?
The debate opens by challenging the assumption that being pro–free market automatically implies being pro–free trade. Oren Cass argues that trading freely with a non-market economy like China can undermine domestic market outcomes, while Noah Smith frames trade as fundamentally positive-sum when viewed through total (gross) exchange rather than balances.
- •Cass: free trade with non-market economies can “wreck” rather than advance free markets
- •Smith: trade’s key benefit is gross trade/exports, not balanced net flows
- •Core framing: whether current trade doctrine fits the realities of China’s system
- •Sets up tariffs as a tool: protection vs distortion vs bargaining leverage
American Compass worldview: family, community, industry—and skepticism of market fundamentalism
Cass describes American Compass’s mission to rebuild an economic consensus oriented around family formation, community stability, and productive industry. He argues markets can support these goals but don’t reliably deliver them, motivating a larger role for policy beyond maximizing efficiency or profits.
- •Mission: restore focus on family, community, and industry as foundations of prosperity
- •Critique: “excessive faith in markets” produces unequal/distorted outcomes
- •Second critique: even efficient markets don’t ensure what people value most
- •Policy implication: economics should consider real-world institutional constraints and social outcomes
Does rebuilding manufacturing actually strengthen families? A challenge from international comparisons
Smith presses Cass on the claimed link between manufacturing revival and family/community renewal. He points to Germany and South Korea as manufacturing-strong countries that still exhibit low fertility and social problems, questioning whether manufacturing policy can plausibly reverse US family decline.
- •Smith questions causal link: manufacturing strength ≠ strong family formation
- •Examples: Germany/South Korea—high manufacturing shares but low fertility
- •Raises burden of proof for social claims tied to industrial strategy
- •Cass signals the need to move beyond simplified textbook models to modern complexity
Comparative advantage in the modern economy: policy-made advantages, assets-for-goods trade, and supply chains
Cass argues textbook comparative advantage models fail to capture modern trade dominated by manufactured goods, strategic industrial policy, and financial flows. He highlights that advantages in key sectors (e.g., semiconductors) are shaped by deliberate choices, and that trade deficits can represent exchanging goods for assets rather than goods-for-goods gains.
- •Textbook trade models assume simple goods/endowments; modern trade is different
- •Manufacturing advantage often created by industrial policy, not nature
- •Example: Taiwan semiconductors—strategic ecosystem, not natural endowment
- •Trade deficits can mean “goods for assets,” raising long-run welfare concerns
“Are we becoming China?”: tariffs, immigration, industrial policy as American tradition
Prompted by the host, Cass rejects the idea that his policy agenda mimics China, noting many such policies were historically American. He emphasizes that US strategy must account for China’s existence, but that protectionism and industrial policy have deep roots in US development.
- •Cass: China doing something doesn’t automatically make it bad
- •Claims high tariffs/restricted immigration/industrial policy were long-standing US norms
- •China’s fertility policy history used as counterexample to “becoming China” framing
- •Key premise: policy should respond to China’s non-market behavior and strategic posture
Do Trump’s tariffs help manufacturing? Timeline, investment lag, and “short-term pain”
Smith asks directly whether Trump’s tariffs will raise US manufacturing output and employment. Cass answers yes in the long run, stressing the lag between incentives, investment decisions, and factories coming online, and arguing complementary policies (industrial policy and workforce) are needed for tariffs to work as intended.
- •Cass: manufacturing gains likely over “a few years,” not months
- •Mechanism: tariffs change incentives → investment → capacity → output/employment
- •Analogy: Japanese automakers building US presence after import constraints
- •Complementary needs: stable tariff commitment, industrial support, workforce development
Clash over current indicators: PMIs, surveys, and what counts as evidence
Smith cites deteriorating PMIs, orders, and investment plans following tariff announcements, interpreting them as real-time evidence of disruption. Cass disputes the “all flashing red” characterization, argues it’s too soon to judge, and points to other indicators and anecdotes suggesting firms are adjusting and investing.
- •Smith: PMIs/orders/employment show contraction linked to tariff announcement
- •Mechanism: intermediate inputs disrupted → firms delay investment/building
- •Cass: early sentiment dips expected; broader “doom” predictions didn’t fully materialize
- •Examples offered by Cass: TSMC shifting investment, pharma reshoring expectations
What would change minds? Capital investment, productivity, and measurable milestones
The host asks what evidence would cause each debater to update their view on tariffs’ long-run effects. Cass prioritizes capital investment and later productivity/output gains; Smith also emphasizes a boom in manufacturing investment as the key validation signal and notes recent factory construction has weakened since “Liberation Day.”
- •Cass: watch capital investment first; output/employment later; productivity crucial
- •Smith: a clear surge in manufacturing investment would change his view
- •Smith’s favored leading indicator: real factory construction spending (FRED) adjusted for building costs
- •Shared view: policy credibility/stability matters for investment decisions
How Cass forms predictions: incentives, business behavior, and limits of economic modeling assumptions
Smith challenges Cass on what frameworks he uses if he’s skeptical of mainstream economics’ predictions. Cass argues he uses core economic reasoning—marginal incentives and profit-seeking behavior—but rejects overconfident models resting on unrealistic assumptions, especially regarding China’s policy environment.
- •Cass: economics tools are useful; the problem is brittle assumptions/models
- •Forecasting lens: what profit-seeking capital will do under different incentives
- •Adam Smith reference: domestic investment preference aligns private/public interest
- •Policy critique: offshoring/cheap labor/financial extraction were incentivized outcomes
Strategic trade vs protectionism: tariffs as threat, currency undervaluation, and credibility
Smith distinguishes tariffs used as negotiating threats from tariffs as enduring protectionist policy. He argues tariffs can be justified to force changes like ending yuan undervaluation, but if carried out they can hurt everyone; Cass replies that credible threats require willingness to impose them, and asks how to respond when China won’t play by rules.
- •Smith: tariffs-as-threat (game theory) differs from tariffs-as-standing policy
- •Example: threaten tariffs to stop yuan undervaluation; best outcome is not using them
- •Smith: if opponents are “irrational,” follow-through causes mutual harm
- •Cass: credibility requires willingness to impose; China’s non-compliance forces response
Allies, scale, and Krugman: free trade with partners to compete with China
Smith makes a scale-economies argument: the US alone lacks China’s market size, so it should pool markets with allies (Europe/Japan/Korea, potentially India) to achieve manufacturing scale. He ties this to Krugman’s models of product differentiation and increasing returns, and to Elon Musk’s advocacy of broader free trade zones.
- •Scale economies: larger markets lower unit costs and improve learning-by-doing
- •China’s internal scale is hard to match with US domestic demand alone
- •Strategy: free trade with allies to pool markets and compete on scale vs China
- •Krugman framework: differentiation (e.g., Harleys vs Kawasakis) enables mutual gains
Trade deficits: net vs gross exports, rebalancing with allies, and the case for a baseline tariff
Cass argues allies often run large goods surpluses with the US and may pursue export-led strategies, requiring rebalancing; Smith argues policymakers over-focus on net deficits and should prioritize gross export opportunities that expand scale and demand. They converge on negotiating with allies but differ on tactics—Smith prefers non-tariff reciprocity, while Cass endorses a predictable baseline tariff (around 10%) plus negotiated balance commitments.
- •Smith: gross exports/market size matter more than net balance for scaling
- •Cass: deficits can map to lost domestic output; partners may need behavior change
- •Smith: address imbalances via negotiation/reciprocity without breaking allied trade
- •Cass: favors stable baseline tariff + revenue use + long-term predictability
Closing challenge: time horizon for evaluating tariffs and conditions for admitting failure
Smith presses Cass on how long tariffs should be tried before concluding they don’t work, given the risk of prolonged weakness in investment and orders. Cass answers that investment response should be evident within 1–2 years, contingent on complementary workforce/industrial policies; absent that, he would concede the strategy is ineffective for reshoring.
- •Smith: asks for a concrete update timeline if manufacturing fails to revive
- •Cass: 1–2 years to judge investment response; longer for output/employment shifts
- •Caveat: success depends on workforce and supportive policy execution
- •Cass: if investment doesn’t materialize and constraints persist, tariffs aren’t effective
