for more, we're joined by by laura carlsen, director of the mexico city-based americas program of theenter for international policy. welcome to democracy now! can you talk about what is happening here, the threat of president trump, what he is accusing mexico of, and mexico's response? >> this threat of imposing tariffs of 5% going up to 25% in october i is economic blackmail. essentially, what he is saying is that mexico should do more to alleviate -- and these are his words -- the crisis of illegal immigration at the border. in the letter that -- the statement that he put out regarding the tariffs, he says these tariffs will be in place until mexico has taken effective actions that will be determined by our discretion and our judgment. so it is not even clear exactly what mexico is supposed to do and how they are trying to negotiate what exactly happening at the border. we have to remember that this characterization of a border crisis is essentially false. these are not unprecedented numbers. this is not an unmanagegeable situation. it is a manufactured crisis that donald trump is u