"zero tolerance" immigration policy.
Earlier on Saturday morning, Trump addressed growing calls to abolish ICE in a pair of tweets, saying they had "zero chance".
President Donald Trump on Saturday hit back against opponents pushing to abolish the U.S. Immigration and Customs Enforcement (ICE), bashing "radical left Dems" and sending a message of support to ICE officials.
Since the Portland Occupy ICE encampment popped up here, tent cities like it have arisen near ICE buildings in larger cities, such as NY and Los Angeles. I gotta say it.
Buch said some law enforcement agencies either don't want to work with HSI or they want "to minimize ICE's involvement in the joint operations".
When CNN's Van Jones asked James Schwab, a former spokesman for ICE's San Francisco division, if he believes the agency should be abolished or shut down, Schwab said, "It just doesn't make sense to me. We know that when people have a effect for illegal activity they do less of it and that's what we're trying to accomplish here".
"I am pleased that ICE will continue to be led by an experienced and well-respected career law enforcement officer who will be a strong advocate for the agency's workforce", she added.
Immigration and Customs Enforcement chief Tom Homan is serving his last day Friday as the controversial face of the Trump administration's crackdown on illegal immigration retires.
ICE, which is tasked with immigration enforcement away from USA borders, has been "emboldened" to inhumanely round up illegal immigrants and deport them, critics say. Hartford City Councilwoman Wildaliz Bermudez, of the Working Families Party, said the visceral nature of reporting from the border during the height of the family separation crisis pushed the movement toward a tipping point.
Ice did not respond to a request for comment on the letter, which was first reported by the Texas Observer.
He said Trump has done more for the safety and security of the country than any of the six presidents he has worked under.
Homeland Security Investigations, which includes more than 6,000 agents, describes itself as an investigative arm of the Department of Homeland Security and a vital asset in "combating criminal organizations illegally exploiting America's travel, trade, financial and immigration systems".
The agency is under mounting pressure amid a string of recent developments that have put ICE in a less-than-flattering light.