Donald Trump prompted groans in Congress by announcing the creation of a new agency to publish weekly lists of felonies committed by immigrants.
Addressing the US legislature for the first time, the new President also defended his administration's plan to impose "extreme vetting procedures" - despite the rejection of his travel ban.
Mr Trump's new agency, to be set up by the Department of Homeland Security, is expected to publish a fresh list of crimes perpetrated by "aliens" each week.
"The office is called VOICE — Victims Of Immigration Crime Engagement," Mr Trump told lawmakers. "We are providing a voice to those who have been ignored by our media, and silenced by special interests."
Although the President's speech was generally well-received, this tranche of the address received audible groans from Democrats.
While Mr Trump didn't defend his most recent travel ban, which was blocked by the Supreme Court, he said "vetting procedures" are necessary to curb the perceived threat posed by migrants entering the US.
He said: "It is not compassionate, but reckless, to allow uncontrolled entry from places where proper vetting cannot occur.
"Those given the high honor of admission to the United States should support this country and love its people and values. We can't allow a beachhead of terrorism to form in America.
"That's why my administration has been working on improved vetting procedures, and we will shortly take new steps to keep our nation safe -- and to keep out those who would do us harm."