These caravans make up only a small portion of the daily migration through Mexico toward the U.S. border. Most of these groups break apart after a few days, with migrants continuing their journey in smaller groups or with their families.

How will Mexican leaders respond if, as expected, Trump pressures them to accept deportees from third countries? 'Mexico is in a really tough spot.'

The group of people from different countries departed on Inauguration Day from Tapachula, Mexico, aiming to reach the U.S. despite President Donald Trump's immigration crackdownwh