Just one piece of Trump's plan, the Laken Riley Act, would require at least $26.9 billion to ramp up capacity at immigrant detention facilities to add 110,000 beds.

Tom Homan, Trump's border czar, has described what the operation might look like and who could be involved in immigration enforcement.

An immigration group sued on Wednesday to block President Donald Trump's move to expand fast-track deportations under his pledge to remove millions of people who are in the country illegally. People facing fast-track deportations do not have access to an attorney and are unable to present evidence against their removal from the U.

In this op-ed two organizers explain how immigration activists and allies are mobilizing against the Trump administration's plans.