CIUDAD JUAREZ, Mexico (AFP) — Mexico’s top presidential candidates launched their campaigns Sunday vowing to take a harder line against Donald Trump, with the leftist front-runner saying his country is done being the US president’s “pinata.” Just as candidates were putting the finishing touches on their opening campaign speeches for Mexico’s July 1 elections, Trump gatecrashed the kick-off party via Twitter, accusing the country of doing “very little” to stop illegal migration and drugs, and renewing […]