Congress doesnt have to stop him. He can sign whatever agreement he wants, but it doesnt bind this country. It doesnt bind future presidents, or future congresses. Its just a personal deal between him and Iran. And, our next president is free to enact whatever foreign policy he/she decides is appropriate.
Will he pay Iran $100 Billion from his personnel fortune ?
When has any congress ever stopped any president from giving away foreign aid? I agree with you. I’m just saying... we have this jerk for another year and 9 months. Then the next president can do whatever he wants with Iran.