Mexican President Claudia Sheinbaum called Tuesday for "cool heads" in the face of US President Donald Trump's announcement of severe new restrictions on migration, among other policy changes.

All along the 2,000-mile border, business leaders, border agents, migrants and their advocates are bracing for change in U.S. policies on trade and immigration.

With President Trump back in office, Mexico's President Sheinbaum braces for strained relations. U.S. public support for hardline policies targeting Mexico is on the rise, and looming energy reforms and trade negotiations add to the challenges.