President Donald Trump has quickly mobilized wide swaths of the federal government to arrest and detain undocumented immigrants in the United States, part of a broader strategy to amass a large enforcement machine.

Among President Trump’s many immigration policies implemented since he took office, his plan for mass deportations has rattled migrant communities in Colorado and beyond.

ICE has take a spotlight role in the wake of plans in Trump's administration for mass deportations. Here's what you need to know about the agency.