Matt Gutman/ABC News(TAPACHULA, Mexico) — A caravan of thousands of footsore Central American migrants who say they are seeking refuge from violence in their countries was moving north Sunday under the close watch of an army of Mexican federal police in riot gear.

Mexican officials said federal police were staying in front of the caravan, which stretched about two miles and comprised mostly of people from Honduras and Guatemala many of whom say they are determined to reach the U.S. border 1,700 miles away.

Those officers, transported in a convoy of tour buses and reinforced with riot police from across the country, have announced they will not let the migrants pass a small town near the border.

“Full efforts are being made to stop the onslaught of illegal aliens from crossing [the border],” President Trump tweeted Sunday afternoon. People have to apply for asylum in Mexico first, and if they fail to do that, the U.S. will turn them away. The courts are asking the U.S. to do things that are not doable!”

The phalanx of police, supported by Mexican military Blackhawk helicopters overhead, was bracing for a repeat of the violent clashes that occurred on Friday when the caravan stormed and overran a crossing at the Suchiate River at the border of Guatemala and Mexico. Members of the caravan crossed into Mexico illegally by either forcing their way through a border fence or jumping into the river and swimming to the Mexico side.

“Donald Trump, we don’t want to cause you any problem, we just want to get a job. Help us,” one young migrant told ABC News as he and hundreds of others walked along a road near Tapachula, Mexico.

Among the thousands of migrants are families. Fathers and mothers carrying sweating children on their shoulders, shielding them from the ferocious sun with blankets or their hands. ABC News saw at least one toddler splayed out on the highway sleeping, his father too tired to go on.

Most were carrying small backpacks and plastic bags. They moved forward on battered shoes, some were barefoot.

In a series of tweets last week, President Donald Trump threatened to “call up the U.S. military and close our SOUTHERN BORDER” if Mexico doesn’t do anything to stop the flow of migrants.

In late April and early May, a much smaller migrant caravan made it all the way to the U.S.-Mexico border, but only a handful of the asylum seekers were processed by U.S. Customs and Border Protection. Trump was critical of the caravan and in a series of tweets slammed “Democrat-inspired laws on sanctuary cities” for encouraging such disparate activities.

“Are you watching that mess that’s going on right now with the caravan coming up? Are you watching this and our laws are so weak, they’re, so pathetic?” Trump said at a rally on April 28 in Michigan.

Trump continued on Sunday to blame Democrats.

“The Caravans are a disgrace to the Democrat Party,” the president tweeted on Sunday. “Change the immigration laws NOW!”

Secretary of Homeland Security Kirstjen Nielsen said in a statement Sunday morning that she and other U.S. officials are monitoring the caravan’s progress and are concerned about criminals infiltrating the group.

“While we closely monitor the caravan crisis, we must remain mindful of the transnational criminal organizations and other criminals that prey on the vulnerabilities of those undertaking the irregular migration journey,” Nielsen said in her statement.

“We shall work with our partners in the region to investigate and prosecute to the fullest extent of the law all who seek to encourage and profit from irregular migration,” Nielsen said. “We fully support the efforts of Guatemala, Honduras and Mexico, as they seek to address this critical situation and ensure a safer and more secure region.”

Most of the migrants ABC News spoke to say they want to march all the way to the United States.

Maria Juaqina, 19, was toting her toddler. She says she has family in Los Angeles, and that “only God can open the doors.”

Mexico says it’s willing to open its doors, temporarily. Mexican police officials used bullhorns Sunday to warn the migrants they were illegally proceeding north. The migrants were advised to apply for asylum in order to get temporary status to legally stay in Mexico.

“You cannot go all around the country like this,” the officials on bullhorns shouted at the movable mass of humanity. “You can go to immigration camps or shelters, so we can establish your cases.”

Mexican asylum status grants migrants a 45-day stay.

Many in the caravan told ABC News that they feared being deported if they voluntarily went to a shelter or immigration camp. Some were demanding proof that they will not be returned home.

The Mexican Interior Ministry said on Saturday that 640 Honduran migrants have requested refuge in Mexico.

The ministry also said that priority would be given to “164 women, some of them in advanced stage of pregnancy; 104 girls, boys and teenagers, who are from 3 months old to 17 years old; as well as older adults who have varying degrees of disability. This group includes a minor  who traveled alone.”

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Source: World News