US Lawmaker Introduces Bill to Deport Immigrants With Extremist Ideologies

US Rep. Chip Roy (R-TX) has introduced sweeping legislation aimed at expanding the federal government’s authority to deport, denaturalize, deny US citizenship, and refuse entry to immigrants tied to extremist ideologies, including socialism, communism, and Islamic fundamentalism.

The legislation, titled the MAMDANI Act, short for Measures Against Marxism’s Dangerous Adherents and Noxious Islamists, is a direct political reference to New York City Mayor Zohran Mamdani and what conservatives describe as a growing alliance between far-left anti-Israel activism and Islamist extremism.

Mamdani, a far-left democratic socialist and avowed anti-Zionist, has made anti-Israel activism a cornerstone of his political career and been widely accused of promoting antisemitic rhetoric.

In a statement, Roy argued that the legislation would increase the government’s capability to filter out potential immigrants with anti-American, anti-Western ideologies.

“Not just for the last six years, but for the last 60 years, our immigration system has been cynically used to disadvantage American workers’ competitiveness in favor of mass-importing the third world,” Roy added. “This has not just led to higher crime and lower wages, but also the promulgation of hostile ideologies fundamentally opposed to American values.”

Roy said the bill is intended to confront what he called a “Red-Green Alliance” between far-left and Islamist extremists that has fueled antisemitism, anti-American radicalism, and support for terrorist organizations under the guise of progressive politics.

“By targeting the Red-Green Alliance, this legislation deploys new tools to fight back against the Marxist and Islamist advance that has devastated Europe and has now arrived on our doorstep, especially in my home state of Texas,” Roy continued. 

Under the proposal, non-citizens affiliated with socialist parties, communist parties, the Chinese Communist Party, or organizations deemed to promote Islamic fundamentalism could be denied entry or deported. The bill would also expand grounds for denying naturalization and, in some cases, allow denaturalization for individuals found to have concealed ideological affiliations or to be actively advocating for violent anti-democratic movements.

Supporters of the bill argue that the measure is necessary amid rising antisemitic incidents across the United States following Hamas’s Oct. 7, 2023, attack on Israel, amid the ensuing war in Gaza. They point to pro-Hamas rhetoric on some college campuses and among far-left activist circles as evidence that immigration enforcement should include stronger scrutiny of extremist ideological affiliations.

In recent years, conservatives have drawn attention to the massive surge in antisemitic protests on American soil, pointing to an increase of foreign migration as the culprit. In the immediate aftermath of the Oct. 7 slaughters in Israel, protests erupted on US campuses and streets. Many of these demonstrations, many of which devolved into riots, were spearheaded by either foreign nationals or recent migrants from the Middle East or southeast Asia.

US Director of National Intelligence Avril Haines warned in 2024 that “actors tied to Iran’s government” have encouraged and provided financial support to many of these protests.

Critics, however, say Roy’s legislation raises serious constitutional concerns, particularly around First Amendment protections, religious liberty, and due process rights. Civil liberties advocates have warned that broad ideological tests for citizenship or deportation could be vulnerable to court challenges and used too broadly against political dissent.