On top of concerns about rising inflation, the tax cuts are already increasing the federal government’s need to borrow and accelerating the date by which Congress must raise the federal debt limit. And as of Monday, there was still no plan in Washington to raise the limit and avoid a catastrophic default.

The result is that a president who tossed aside traditional presidential caution in cheerleading the stock market now stands poised to take the blame for any correction.

“This is a risk that the president clearly set himself up for,” said Charles Gabriel of Capital Alpha Partners, a Washington research firm. “Until now, Trump’s had kind of a free ride in this market and taken so much credit for it, even though so much of it was due to easy-money policies from Janet Yellen and the Fed. Now she’s out the door and volatility is back.”