The long-awaited overhaul of financial regulations is set to hit the Senate floor in a matter of weeks, and both sides are hunkering down to strategize — while planning to meet with the president Wednesday. Republicans cannot agree on an alternative plan. They want to oppose the Democrats' bill while not appearing too cozy with Wall Street in an election year. Liberals aren't interested in making the kind of concessions they did on health care. They're daring Republicans to stage a public battle over bank regulation.