Border declaration, terrorist designations unlock new options—and new risks

Updated: Jan. 20, 9:05 p.m. ET.President Donald Trump declared a national emergency at the southern border and vowed to designate some drug cartels and gangs as foreign terrorist organizations, unlocking new authorities for dealing with migrants and transnational criminal organizations, including possible military action—and new risks as well.Earlier on Monday, a spokesperson for the new administration gave reporters a bit more detail. The Venezuela-based gang Tren de Aragua and El Sa