Senate Republicans also have sought to pump the brakes, in another indication of the political hurdles the package faces. The bill would be a win for President Biden and Democrats, who have made expanding the child tax credit a signature issue, including Senator Sherrod Brown of Ohio, who is up for re-election this year and is a key target for Republicans in November.
And a group of lawmakers from New York and other blue states with high tax rates are angry that the measure omits an increase they have sought to the cap on state and local tax deductions, known as SALT, which would benefit high earners. New York Republicans signaled their ire on Tuesday by briefly blocking a procedural measure in protest.
“The point, as has been made multiple times in this Congress, is obviously that there are strength in numbers,” said Representative Mike Lawler, who joined Representatives Anthony D’Esposito, Nick LaLota and Andrew Garbarino in defecting on the measure, only to switch their votes once their point had been made. “But for us that delivered the majority, this is the issue that matters.”
Mr. Johnson assuaged their concerns after a long night of meetings Tuesday by committing to move forward on SALT, according to a person familiar with the discussions who described them on the condition of anonymity. Another person, who also described the discussions on the condition of anonymity, said the expectation was that the speaker would move a measure that would double the cap on SALT deductions for married couples.
The package under consideration on Wednesday was brokered by the top two tax writers in Congress: Representative Jason Smith, Republican of Missouri and the chairman of the Ways and Means Committee, and Senator Ron Wyden, Democrat of Oregon and the chairman of the Finance Committee. It has the support of the White House, key leaders in both parties on Capitol Hill and a variety of rank-and-file members. It gained momentum after the Ways and Means Committee approved it on an overwhelmingly bipartisan basis in January.