House Speaker Mike Johnson said he is canceling the week's voting agenda after several Republicans joined Democrats in a vote to change the rules to allow new parents in Congress to vote by proxy.

WASHINGTON—House Speaker Mike Johnson (R., La.) failed to tamp down a revolt from some rank-and-file Republicans trying to bypass his authority, in a tussle that included charges of political blackmail and a crackup in the hard-line House Freedom Caucus.

The group of Republicans teamed up with Democrats to overcome a procedural hurdle backed by GOP leadership that would have blocked a proposed resolution allowing new parents in Congress to vote remotely.