Progressives in Congress and other migrant rights advocates sharply criticized U.S. President-elect Donald Trump for his comments on immigration during a Sunday interview, including on his hopes to end birthright citizenship. During a 76-minute interview with NBC News’ Kristen Welker, Trump said he “absolutely” intends to end birthright citizenship, potentially through executive order, despite the 14th Amendment to the U.S. Constitution. Among many lies the Republican told, he also falsely claimed that the United States is the only country to offer citizenship by birth; in fact, there are dozens.In response, outgoing Congressional Progressive Caucus Chair Pramila Jayapal (D-Wash.) said on social media Monday: “This is completely un-American. The 14th Amendment guarantees birthright citizenship. Trump cannot unilaterally end it, and any attempt to do so would be both unconstitutional and immoral.” Congresswoman Gwen Moore (D-Wis.) similarly stressed that “birthright citizenship is enshrined in the Constitution as a cornerstone of American ideals. It reflects our belief that America is the land of opportunity. Sadly, this is just another in the long line of Trump’s assault on the U.S. Constitution.” Rep. Delia Ramirez (D-Ill.), the daughter of Guatemalan immigrants, said in a statement: “‘Give me your tired, your poor, your huddled masses yearning to breathe free.’ It is important to remember who we are, where many of us came from, and why many of our families traveled here to be greeted by the Mother of Exiles, the Statue of Liberty.” Ramirez argued that “the story of our nation wouldn’t be complete without the sweat, tears, joy, dreams, and hopes of so many children of immigrants who are citizens by birthright and pride themselves on being AMERICANS. It is the story of so many IL-03 communities, strengthened by the immigration of people from Poland, Ukraine, Italy, Mexico, and Guatemala, among others. It is the story of many members of Congress who can point to the citizenship of their forebears and ancestors because of immigration and birthright.” “Let’s be clear: Trump is posing the question of who gets to be an American to our nation. And given that today’s migrants are from Africa, Asia, the Caribbean, and Latin and Central America, it is clear he is questioning who are the ‘right’ people to benefit from birthright citizenship,” she continued. “Questioning birthright citizenship is anti-American, and eliminating it through executive action is unconstitutional. Donald Trump knows that.” “But emboldened by a Supreme Court that would use its power to uphold white supremacy rather than the Constitution of our nation, Trump is on a mission to weaken the very soul of our nation,” she warned. “I—like many sons and daughters of immigrants and first-generation Americans—believe in and fight for a land of freedom, opportunities, and equality. To live into that promise, we must stand against white nationalism—especially when it is espoused at the highest levels of government.” Although Republicans are set to control both the U.S. Senate and the House of Representatives next year, amending the Constitution requires support from two-thirds of both chambers of Congress and three-fourths of the state legislatures, meaning that process is unlikely to be attempted for this policy. Rep. Adriano Espaillat (D-N.Y.) highlighted the difficulties of passing constitutional amendments while discussing Trump in a Monday appearance on CNN. The incoming chair of the Congressional Hispanic Caucus was born in the Dominican Republic and is the first formerly undocumented immigrant elected to Congress. As Mother Jones reporter Isabela Dias detailed Monday: Critics of ending birthright citizenship for the U.S.-born children of undocumented immigrants argue it would not only constitute bad policy, but also a betrayal of American values and, as one scholar put it to me, a “prelude” to mass deportation. “It’s really 100 years of accepted interpretation,” Hiroshi Motomura, a scholar of immigration and citizenship at UCLA’s law school, told me of birthright citizenship. Ending birthright citizenship would cut at the core of the hard-fought assurance of equal treatment under the law, he said, “basically drawing a line between two kinds of American citizens.” Trump’s NBC interview also addressed his long-promised mass deportations. The president-elect—whose first administration was globally condemned for separating migrant families at the southern border and second administration is already filling up with hard-liners—suggested Sunday that he would deport children who are U.S. citizens with undocumented parents. “I don’t want to be breaking up families, so the only way you don’t break up the family is you keep them together and you have to send them all back,” Trump told Welker. Responding in a Monday statement, America’s Voice executive director Vanessa Cárdenas said, “There’s a growing consensus that the Trump mass deportation agenda will hit American consumers and industries hard, but the scope of what Trump and his team are proposing goes well beyond the economic impact.” “Trump and allies are making clear their mass deportation agenda will include deporting U.S. citizens, including children, while aiming to gut a century and a half of legal and moral precedent on birthright citizenship,” she added. “In total, their attacks go well beyond the narrow lens of immigration to the fundamental question of who gets to be an American.”