The change is a response to a desire among House Republicans to vote on a stronger version of a resolution Boehner had prepared Tuesday night that many experts believe would be found unconstitutional in the unlikely event that both chambers approved of it. The House will also take up, as previously planned, another resolution authorizing the use of American force in Libya. That measure is designed to fail and show Obama that he does not have the support of the House for U.S. operations in Libya.

Rank-and-file Republicans have taken issue not only with the U.S. participation in the NATO-led effort in Libya, but also what they say is a failure of the president to make the case for the engagement and his determination that he need not comply with the strictures of the War Powers Act because American operations in Libya, which have included missile strikes, do not constitute “hostilities.”