We're not "following" them, we're negotiating alongside them. Any "deal" will be negotiated by all, including us.
I'm sorry, but
you were the one who used the term "follow" in this context. So what happens if we stop negotiating "alongside" them? Shouldn't that send a strong message to the other 4+1 nations that Iran shouldn't be trusted at the negotiating table? Haven't they already demonstrated their untrustworthiness to the major world powers by now?
But we're not going to stop negotiating. It's just not going to happen, no matter how much you want us to. We're already at the negotiating table. And no - Iran has not "demonstrated their untrustworthiness" to the major powers.
Let me try to explain the timeline to you. Right now, the P5+1 countries are negotiating with Iran. Congress won't have "a say" until
after the negotiators arrive at a deal that appeals to all the parties negotiating.
If Congress decided to ignore the negotiations and deal that we took part in, why would that impact the other members of the talks?
Congress is well within its rights to ignore the negotiations. And there was no "we" involved. Just Obama and his subordinate, John Kerry. There is no "I" in "we."
As for the impact, see the the previous response.
Congress can "ignore" whatever it wants, but as we all learn as young children, ignoring something doesn't make it go away.
As for my use of "we", that's how it works. The President officially represents "us" in foreign policy negotiations. It's in his job description.