 The U.S. is now taking several steps to stop them. Ecuador this month began requiring visas for Chinese migrants. Mexico upped troop levels and began policing the rail yards. And this weekend, for the first time in six years, the U.S. deported 116 Chinese nationals back to China. President Biden recently passed executive orders that would shut down the southern border if the number of illegal crossings met a certain threshold. I'm Sue Guzman. This is Fox News.