again, i think, biden than anybody. i think he is the weakest mentally. and i like running against people that are weak mentally. when a man has to mention my name 76 times in his speech, that means he is in trouble. joe biden is a dummy. >> while joe biden drew most of the president's fire, he also pushed back against reports that there is nothing new in the deal the state department struck with mexico on immigration. >> that's the agreement everybody says we don't have. i just give you my word inside here and i would love to do it but you will stop it, you will analyze it. >> administration sources tell fox news that in negotiations last week, mexico agreed to adopt safe third country status, which would mean central american migrants in mexico would have to apply for u.s. asylum from mexico. and that if they made it across the u.s. border, they couldn't make an asylum claim. asked about that by fox news, president trump deferred. >> you can just figure it