1) Obama's proposals did address budget issues. Provable, and easily so. Raising taxes directly addresses deficits by reducing them. These proposals were fought and defeated in the House by the tea party caucus.
2) I do think it is a big deal. I have said so already. Again provably wrong, and downright dishonest on your part.
3) It isn't the biggest problem we have at the moment. There is even a fair argument to be made that it isn't even a problem, but that is a section of economics I have not read enough about to evaluate, so it is not something I am going to claim. I will say it is an important problem, but I am not going to cut off my nose to spite my face to fix it.