Looking ahead: Mr. Trump said on Monday that farmers and manufacturers would be the first to reap the benefits of the agreement, but analysts said the payoff was unclear: China has made no specific commitments, and U.S. and Chinese officials gave conflicting statements about what had been agreed to.

Another angle: The Trump administration says Mr. Xi has agreed to cut the flow of the powerful opioid fentanyl into the U.S. It’s a promise that has been made before.

Turmoil after the midterm elections

Protesters crowded the halls of the State Capitol in Wisconsin on Monday, accusing Republicans of trying to undo an election they lost by moving to curb the powers of the governor and attorney general before Democrats assume those positions.

“It’s a power grab,” one state representative said. Republicans have also proposed limits on early voting and a shift in the timing of the presidential primaries .