On the campaign trail, Trump has vacillated several times on the issue, at first indicating that all undocumented immigrants would be sent back" if they've done well they're going out and they're coming back in legally." Then he tempered his remarks to focus on undocumented immigrants who committed crimes.
But Trump's executive order appears to extend beyond this.
Anyone who came to the U.S. illegally -- that is without passing through border inspection committed a criminal misdemeanor and could fall into the priority removal category, legal experts tell ABC News.
While overstaying a visa is not a criminal offense, legal experts say that those who do so could fall under a vague clause in the executive order that undocumented immigrants who "have engaged in fraud or willful misrepresentation in connection with any official matter" are a priority for deportation as well.
"Lady Liberty is probably closing her eyes right now in New York Harbor."
"This order takes that notion of 'criminal alien' to its farthest reaches," Martin continued.
A professor from Yale Law School, Peter Schuck, also called Trump's executive order "extraordinarily broad" and said that one provision that states "ensure that jurisdictions that fail to comply with applicable Federal law do not receive Federal funds" could be read to mean all federal funding, not just law enforcement assistance going to sanctuary cities such as San Francisco, Austin and New York.
The orders stipulate an increase in the number of border patrol enforcement officers and lay the groundwork for building a wall on the U.S.-Mexico border, a longtime campaign promise of Trump's.
"The DHS deportation force has a track record of racial profiling and excessive force abuses, and expanding it will further erode the rights of millions of people who call our safe border communities home. Locking up asylum seekers who pose no danger or flight risk is unconstitutional and benefits nobody except private prison corporations and politicians looking to score rhetorical points. We will see the Trump administration in court if they go down that road," Jadwat said in a statement.
ABC News' Serena Marshall and Jordyn Phelps contributed to this report.