House Speaker John Boehner (BAY'-nur) and his leadership team say they need to review a Senate pact that would increase taxes on incomes exceeding $400,000 before deciding to schedule a vote on the measure or try to change it.

In a joint statement late Monday, House GOP leaders promised to keep their commitment to act on the measure if it passes the Senate. But they say they won't decide whether to accept the measure or to amend it and send it back to the Senate until lawmakers and their constituents have a chance to review the legislation.

Democrats would likely oppose any effort to amend the measure to make it more to GOP liking. That would likely make it almost impossible for Republicans to quickly rewrite the measure.