Following president Donald Trump's threats to hit Mexico with tariff hikes if the country fails to stem the flood of illegal immigrants, Mexican President Andres Manuel Lopez Obrador responded by saying they could be "prepared to reach out the deal." White House Chief of Staff Mick Mulvaney reaffirmed that Trump is "deadly serious" about levying a 5% tariff on Mexican goods if the Mexican government if they don't step up enforcement on the southern side of the border,