Kevin Brady

1st GOP senator opposes tax bill in early sign of problems

Wisconsin's Ron Johnson on Wednesday became the first Republican senator to say he opposes his party's tax bill, signaling potential problems for GOP leaders. Passage of a similar package seemed certain Thursday in the House, where a handful of dissidents conceded they expected to be steamrolled by a GOP frantic to claim its first major legislative victory of the year.

Eager to act before opposition groups could sow doubts among the rank-and-file, Republican leaders were anxious to hand Donald Trump the first crowning bill of his presidency by Christmas. Trump planned to visit House GOP lawmakers Thursday at the Capitol in what seemed likely to be a pep rally, not a rescue...