Yeah, but with American money :-\
You know the thing, give them a line of credit only redeemable in the US so it looks like Mexico is spending billions of dollars at Macy's and Walmart and with Budweiser and Boeing. Lots of American advisers will also be dispatched down there to supervise while getting paid out of that same credit pot, however the cash will almost all be spent in the US.
It's the customary aid-and-trade-with-the-third-world con.