On Capitol Hill, the battle over the healthcare overhaul law has become a kind of scripted political theater. On Wednesday, Republicans in the Senate tried to repeal the law, as expected. Democrats had the votes to beat them, as expected. But now, the legal fight over the law threatens to overshadow the drama that Washington has been rehearsing. Two federal judges have struck at a key provision of the legislation, ruling that Congress can't force individuals to buy health insurance. These cases are almost certainly headed for the Supreme Court, which many predict will decide the law's fate by the spring of 2012. And now, legal experts say, it seems possible that the high court might strike down all or part of the law.