A more explicit critique comes from Larry Summers, who has warned that the stimulus may lead to stagflation. He appears to believe that the Fed can’t use monetary tightening to offset overheating generated by fiscal expansion without causing a nasty recession. But I have to admit to being a bit puzzled about why. Indeed, the Fed has done that in the past: in the 80s and again in the 90s it acted to rein in booms without causing recessions.
So even if you’re uncomfortable with President Biden’s fiscal policies, you should be very cautious about making arguments against them that rely on novel propositions about why inflation can’t be contained. Conventional analysis says what Janet Yellen said: If the stimulus proves bigger than needed, the Fed can keep things under control. If you’re asserting otherwise, think hard about why you’re saying that."