President Donald Trump on Tuesday suggested that the US had no laws to prevent migrants from entering the USA without permission.
Former President Barack Obama created the Deferred Action for Childhood Arrivals program to provide temporary protection and work permits to hundreds of thousands of immigrants who are living in the USA illegally after being brought here as children. The migrants on the journey hope to make it to the United States border, where they can make a claim that they qualify for asylum.
Earlier Tuesday, Mexican Foreign Affairs Secretary Luis Videgaray Caso had tweeted the caravan was "dispersing" on its own and that Mexico's immigration policies would not be influenced by foreign threats.
The caravan that once numbered 1,150 or more people actually halted days ago in the town of Matias Romero in the southern state of Oaxaca, where participants slept out in the open.
He also claimed that people are flowing over the border "trying to take advantage of DACA".
Making his remarks during a lunch meeting at the White House with the presidents of Baltic nations, as Gen. James Mattis sat beside him at the table, Trump said, "I've been speaking with Gen. Mattis".
For starters, it makes absolutely no logical sense that the President would make a big deal of announcing "NO MORE DACA DEAL"- in all caps, as though he were taking some bold new stance.
Trump has recently reiterating his hardline stances on immigration, while repeatedly calling out Mexico over the border security and stressing the need for a border wall on the southern border.More news: Commonwealth Games: Sally Pearson set to withdraw from Gold Coast 2018
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"Now with this last tweet they are getting very anxious that they might need to depart the country soon", Rivera said.
Trump tweeted that the USA must build a border wall, but argued that "Democrats want No Borders, hence drugs and crime!"
In addition, Trump himself ordered an end to the programme, and the U.S. Department of Homeland Security is not accepting new applicants.
Then in 2010, President Barack Obama sent 1,200 National Guard troops to the border in an effort to win GOP support for an immigration bill. However, by USA law the military would be limited to a support role for US border patrol agents. That number in 2015 and 2016 was higher than years previous. Over two years, about 29,000 National Guard forces participated, as forces rotated in and out.
The Guard members were used for surveillance, communications, administrative support, intelligence, analysis and, in some cases, the installation of border security infrastructure.
Federal law prohibits the use of active-duty service members for law enforcement inside the United States, unless specifically authorised by Congress. Former Texas Governor Rick Perry, now serving as Mr Trump's energy secretary, sent 1,000 Texas National Guardsmen to the Rio Grande Valley in 2014 in response to a sharp increase in Central American children crossing the border alone. That option also requires identifying rotational forces.
"NO MORE DACA DEAL!", Trump said on Twitter as he blamed Democrats for the situation.
"... Congress must immediately pass Border Legislation, use Nuclear Option if necessary, to stop the massive inflow of Drugs and People". "We have very bad laws for our border and we are going to do some things militarily", said Trump, adding that he had already talked about matter with Pentagon chief Jim Mattis.