He's put forward his proposal so unless he comes along and completely reneges on it (possible but I don't think it's likely since he'd be getting a lot of what he wants out of it) it's up to the Republicrat and Demopublican Congress Critters to negotiate off the baseline he's laid down, if they fuck it up and don't come to an agreement then it's really not on the Donald since he's giving them a lot to work with here.
Personally I have no faith in either party that anything good will come out of this since the only talent that partisan dickweeds possess is taking a bad situation and making it worse.......
While I usually have zero problem criticizing the inaction and disfunction in Congress, it was literally just days ago when Trump said, on camera, (paraphrase) "Bring me a bi-partisan bill - any bi-partisan bill - on DACA, [and other matters], and I will sign it. I will not object to it or say I want my own ideas put in the bill I will simply sign it and take the heat....I'm used to taking heat."
So, literally, a bi-partisan group of 4 Democrats and 4 Republicans did just that and he reneged on the deal and his own promises.
Trump is completely untrustworthy....even more so than Congress.