This is a very good question, one I've wondered about for some time. If you or I miss a deadline, such as filing our income taxes, we get penalized. The law says, do this, and if you don't do this, you will suffer, somehow.
Reid and the Senate have missed a lawful deadline, too. If we have to pay penalties for our failures to comply with the law in a timely fashion, there's no excuse for TPTB in the legislature to have it any different.