takes in and what it spends. the current bill adds $1.4 trillion to the deficit over ten year, gop says economic growth will eventually pay for this. but senator bob corker worries that may not be the case. what if that doesn't happen and you've got tax cuts blowing a hole in the budget. he wants to include a provision to raise taxes if revenue falls show. so far the estimates show the bill on the table right now doesn't hit the gop target growth date. >> this is a big day. let's bring in cnn political analyst julian. >> today, because of a budget committee vote. the difficulty is you've got roughly a a dozen senators. to christine's point, they a all want to take care of various groupsk right? but on the other hand, each time you take care of one of those, you impact the deficit which