Migrants walk through Tapachula, Chiapas state, Mexico. ( AP Photo/Edgar H. Clemente)
Migrants for caravans because they believe there is safety in numbers as it is hard or impossible for immigration agents to detain large groups of hundreds of migrants.
Some are hoping to catch rides to help them on their journey, while others will make the arduous trip to the southern border by foot in the searing heat.
"It is going to be more difficult, that’s why we are going in hopes of getting an appointment quicker so we are able to cross before he (Trump) takes office," Yotzeli Peña, 23, a migrant from Venezuela tells the Associated Press. "That would be easier."
Trump has promised to seal the southern border due to the unprecedented flow of migrants into the U.S. over the last three and a half years.
He has also vowed to carry out the largest deportation operation in the history of the U.S. and has appointed hardliner South Dakota Gov. Kristi Noem to serve as secretary of the Department of Homeland Security (DHS) while Tom Homan will be the new "Border Czar."
Additionally, he has also pledged to end the use of parole programs by the Biden administration that allow migrants to enter in via the expanded "lawful pathways."
MORE MIGRANTS LIKELY TO RUSH BORDER DESPITE REPORTS OF SPLINTERING CARAVAN: EXPERTS
Migrants walk through Tapachula, in Mexico Wednesday. (AP Photo/Edgar H. Clemente)
Initially, the app was only available to migrants in northern and central Mexico, but officials changed it to include those at the southern border.
By extending the app south to Tapachula, officials hoped it would stem the rush north. But some migrants still want to be close to the border so that if they do get one of the cherished appointments, they can get to it quickly and not risk missing it.
"They’re determined to make it into the U.S., one way or the other, because they’ve sold everything, they have nothing to go back to," independent journalist Auden Cabello, who extensively covered the border crisis, told Fox News Digital last week.
Fox News’ Adam Shaw, Michael Lee and The Associated Press contributed to this report.
Michael Dorgan is a writer for Fox News Digital and Fox Business.
You can send tips to michael.dorgan@fox.com and follow him on Twitter @M_Dorgan.
https://www.foxnews.com/politics/caravan-1500-migrants-forms-mexico