The issue of the country's loose asylum laws - where foreign nationals can claim that they fear for their lives in their native country and be released into the US until their day in court - has sparked debate as a caravan of 7,000 to 10,000 Central Americans heads to the U.S.
The asylum restrictions are the latest attempts by the administration to assert executive powers ahead of a massive caravan of Central American migrants moving north through Mexico.
Immigrant advocacy groups have complained that under Trump, U.S. border police have made it more hard for people to cross into the country at ports of entry and have outright turned away some migrants.
Immigrant advocates denounced the move, saying it violated existing USA law that allows people fleeing persecution and violence in their home countries to apply for asylum regardless of whether they enter illegally or not.
Trump is expected to sign the order on Friday before leaving on a trip to Paris.
The new rules will nearly certainly face court challenges. "It is illegal to circumvent that by agency or presidential decree", the ACLU said.
Uganda's Ebola vaccination for high-risk health workers postponed to Wednesday
Ebola first appeared in 1976 in Sudan and Congo, and gets its name from a river in the latter nation. The vaccine is only used under "compassionate use" although it is not commercially licensed.
"The biggest loophole drawing illegal aliens to our borders is the use of fraudulent or meritless asylum claims to gain entry into our great country", Mr. Trump said last week. More than 7,000 active duty troops could eventually be deployed, Defense Department officials said.
Immigration was a major focus in President Trump's 2018 mid-term election campaign.
He called a current caravan, which is still hundreds of miles from the United States border and dwindling in numbers, an "invasion" and said it would bring hardened criminals to USA streets.
"Those who enter the country between ports are knowingly and voluntarily breaking the law", one unnamed official told reporters, the Post reported.
Members of the migrant caravan arrive at the shelter of the Church of the Assumption, in the city of Puebla.
In 2018, border patrols have registered more than 400,000 illegal border crossers, homeland security said. He will invoke the same powers he used to push through a version of the travel ban that was upheld by the Supreme Court, according to senior administration officials.
Thanks to Attorney General Jeff Sessions, asylum rules were reformed to prevent migrants from receiving asylum by claiming they are fleeing violence, gangs, or domestic abuse.
"What we are attempting to do is trying to funnel. asylum claims through the ports of entry where we are better resourced, have better capabilities and better manpower and staffing to actually handle those claims in an expeditious and efficient manner", a senior administration official told reporters in a news briefing on Thursday, on condition of anonymity.