Majority Whip Steve Scalise, R-La., told members of his caucus earlier in the year that he would not tolerate members voting against the party on rules.
In January, Reps. Daniel Webster and Richard Nugent, both of Florida, lost chairmanships on subcommittees after voting against Boehner in his re-election bid as speaker.
"While whip team members are free to vote their conscience on underlying bills, they are expected to vote as a team on procedural matters such as last week's rule vote," Scalise wrote in an email to the caucus explaining his actions in January.
