Mexico warns firms not in their interest to build border wall

By Anthony EspositoMEXICO CITY (Reuters) - Mexico's government on Tuesday warned Mexican companies that it would not be in their best "interests" to participate in the construction of U.S. President Donald Trump's border wall, though there will be no legal restrictions or sanctions to stop them if they tried.While some Mexican companies stand to potentially benefit from the controversial infrastructure project, residents south of the border view the wall and Trump's repeated calls to have Mexico