One of the reasons that Donald Trump won the presidency was to put America First and to stop foreign domination of the U.S. in trade policies and immigration policies. Among the nations that had been "beating" the U.S. in both of these was Mexico.
Former president of Mexico, Vicente Fox, has been one of the biggest advocates of Mexican meddling.
A recent example of this can be seen here: http://www.vdare.com/posts/unhinged-vicente-fox-rants-again-about-donald-trump-calls-trump-illegitimate-president-who-didnt-won-sic-the-general-election
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