When they get to the United States, they hope American authorities will grant them asylum or, for some, be absent when they attempt to cross the border illegally.
But Mexico is hardly laughing, experts told Newsweek.
Trump appeared to be referring to the unsafe journey migrants often take through Central America to get to Mexico and the US. They're bringing drugs. They're bringing crime.
But the caravan - organized into a large group to protect against bandits and others - has become more of a showcase of the difficulties facing activists trying to aid migrants and keep them on the move.
Some strategy to ask for asylum from the usa, the others aim to remain at Mexico. They're not sending you. "Under no circumstance does the government of Mexico promote illegal migration", the foreign ministry told CNN in a statement.
The newspaper El Heraldo said in a headline Thursday "U.S. deploys National Guard. tin soldiers". In order to be eligible for the programs a person has to have lived in the United States prior to June 15, 2007 and has to have been brought here as a child.
Organizers from Pueblos Sin Fronteras are also now stressing to media outlets that the main goal of the caravan is to help asylum seekers reach the central Mexican city of Puebla to attend a "migrants rights symposium" where they can learn about the legal strength of their asylum claims before then ending their journey in Mexico City. "Because of the Trump Administrations actions, Border crossings are at a still UNACCEPTABLE 46 year low. Some people in Mexico called her the 'Hillary wannabe, ' and it is believed she will play more of a spoiler role".
Cillizza: Finish this sentence: "By focusing so much attention on the caravan, Donald Trump did _". USA border authorities reported a 26 percent decline in the number of people detained along the Mexico border in 2017 compared with the previous year.
It was not clear how numerous hundreds meant to stay in Mexico or travel on to the United States. "In terms of a political hook, it's very useful to the president".
"If your recent declarations are due to frustration over issues to do with internal policy, your laws, or your Congress, direct yourself to them, not to Mexicans", Mr PeñaNieto said.
The Mexican leader took a measured tone in his remarks, spoken in front of a Mexican flag, listing the ways his country has worked with the USA, including with Trump, to "modernize" NAFTA and stop transnational criminal gangs and other things.