Trump and his Mexican counterpart, Claudia Sheinbaum, have been engaged in a back-and-forth war of words over the threat of US strikes on what it says are drug cartels in Mexico.

Hundreds of National Guard troops from Texas have arrived at an army training centre outside Chicago to support US President Donald Trump's immigration crackdown. Trump has branded Chicago a "war zone ...

Mexican military reinforcements arrive following a drug cartel mass killing during a horse race in the state of Chihuahua.