Two Mexican nationals in the U.S. on nonimmigrant visas were arrested during a traffic stop in Colorado last month while transporting 180,000 rounds of ammunition, authorities said Wednesday. Caesar Ramon Martinez Solis, 41, and Humberto Ivan Amador Gavira, 24, both of Mexico, were pulled over in Canon City on March 26, the U.S. Attorney’s Office – District of Colorado said in a news release. SNIP It’s hard to know from the article exactly what kind of ammo they had. If “.308” is right, that’s high-powered ammo suitable for hunting with common bolt-action rifles, and semiautomatic battle rifles like the FN-FAL,...