The House voted Monday to appoint lawmakers to a conference with the Senate on how to combine tax reform legislation authored by Republicans in each chamber, the latest step in the GOP plan to get a final bill to President Trump’s desk by Christmas.

The vote was narrower than some expected at the start, and the vote was held open for more than 30 minutes as a few dozen Republicans held back their vote amid signs that some in the GOP caucus were skittish about moving the bill along.