Trump also said on social media platform Truth Social that he will end all federal benefits and subsidies to "noncitizens".
The US president added that he will "denaturalise migrants who undermine domestic tranquillity, and deport any foreign national who is a public charge, security risk, or non-compatible with Western civilisation."
The Trump administration also said it would review green cards issued to all foreigners from countries "of concern," a day after two National Guard members were shot in Washington.
Joseph Edlow, director of the US Citizenship and Immigration Services (USCIS), said on X that he had directed "a full scale, rigorous re-examination of every Green Card for every alien from every country of concern" at the direction of US President Donald Trump.
He did not initially specify which nationalities would be targeted.
A green card allows foreign nationals to live and work permanently in the United States.
A USCIS news release cited "19 high-risk countries" without listing them, but linked to a June presidential decree announcing entry bans for people coming from 12 countries, including Afghanistan, Iran and Somalia, and a partial restriction of entry for nationals of a further seven countries, including Cuba and Venezuela.
with DPA
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