really not sitting well with republicans in congress. senator chuck grassley says the move is really putting a wrench in their ability to get the usmca through congress. >> i think it's not a setback from the standpoint of how hard i'm going to work to get usmca passed so the president can have a big victory. i'm disgusted in several ways, not with the white house but there's some disagreement even among republicans whether resolution of disapproval would be appropriate. reporter: senator cornyn telling fox news he doesn't think congress can consider the usmca as long as we are in this trade fight with mexico. some in the gop are thinking about overriding the president's tariff threat by voting to block the added tax on products coming from mexico. republicans are concerned that this ever-growing tariff could have catastrophic effects on consumers and companies and the u.s. economy as a whole. senator john kennedy says he