A caravan of more than 7,000 migrants is heading to the USA on a thousand-kilometre journey through Mexico. They are mainly from Honduras and want to find a better life in the U.S. Many are parents with young children. They are fleeing the violence and a lack of job opportunities back home. A reporter said the caravan was "a river of people". They are battling hot weather, little food and exhaustion in their flight. Many in the caravan were recently deported from the U.S. after having lived there illegally for decades. They are desperate to go back to be with their children still living in the U.S.

The U.S. government made it clear that it would stick to its asylum laws. It will turn away anyone who doesn't apply for asylum in Mexico first. It has a "zero-tolerance" policy towards migrants to stop people from trying to enter the country illegally. There was anger earlier this year after authorities separated migrant children from their parents at the border. President Donald Trump tweeted: "Sadly, it looks like Mexico's police…are unable to stop the caravan.…Criminals and unknown Middle Easterners are mixed in." He has vowed to cut foreign aid to Guatemala and Honduras.