Trump says he'll undertake the 'largest deportation' in U.S. history. Can he do that?

Contributing sentiments towards policy:

54% : In 2018, Trump sent 5,800 active-duty troops to the southwestern border amid the arrival of a caravan of thousands of migrants from Central America.
53% : Trump and his surrogates have offered sparse details for how he would carry out the "largest deportation operation in American history," but have cemented the goal as a top priority.
50% : Trump has promised to go further during a second term by recalling thousands of troops from overseas to be stationed at the U.S.-Mexico border.
46% : Jawetz said Trump could redirect funds from the Federal Emergency Management Agency and the Department of Defense, like he did for construction of the border wall, and could also reassign personnel from other agencies to perform immigration enforcement tasks.
46% : "We would hope and expect to see much of the same this time around" if Trump wins, the former Homeland Security counsel said.
45% : "Trump has also said he would deploy National Guard troops under the orders of sympathetic governors.
39% : Trump has said he would similarly rely on state and local law enforcement.
35% : During his entire presidency, from January 2017 to January 2021, Trump deported about 1.5 million immigrants, according to a Migration Policy Institute analysis of federal figures -- far fewer than the 2 million to 3 million he speculated about deporting in a 2016 interview as president-elect.
31% : Using the Alien Enemies Act, Trump could conduct rapid deportations without the typically required legal processes.
30% : Chin said he isn't convinced that Trump would make the Alien Enemies Act the cornerstone of his immigration policy because the U.S. is not in a declared war with another nation.
28% : Last year, President Biden sent 1,500 Army and Marine Corps troops to fill critical "capability gaps" at the border as the administration lifted the Title 42 border expulsions policy that Trump had invoked to turn away asylum seekers and other would-be immigrants as the COVID-19 pandemic raged.
19% : At a campaign rally earlier this month in Aurora, Colo., Trump said he would invoke the Alien Enemies Act of 1798 "to target and dismantle every migrant criminal network operating on American soil.
19% : "The courts' hesitance to weigh in on these questions heightens the risk that Trump will invoke the Alien Enemies Act despite its clear inapplicability," she wrote.
18% : In May, Trump told Time magazine he would target 15 million to 20 million people who he said are living illegally in the U.S.

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