As President Donald Trump kicks off his second term, one expert is urging immigrants to be proactive in seeking legal assistance amid concerns over mass deportations.  

“We are going to have to wait and see what happens. And really, not only what the details of the policies are, but also how they're implemented and how many resources are put into it,” Dan Berger, an immigration attorney with Pennsylvania-based law firm Green & Spiegel and visiting fellow at Cornell Law School, said during an interview on “Mornings On 1” Tuesday.

In his inauguration speech Monday, Trump made it clear that immigration enforcement and border security would be at the top of his agenda. This time, the president declared a national emergency to fund his border wall on day one, a move that took over two years during his first term.

Meanwhile, Staten Island Rep. Nicole Malliotakis said that mass deportations would soon hit New York City.

For Berger, the message to immigrants is clear: don’t wait to get help.

“Some people are so busy with their lives and their family that they don't go ahead and talk to a lawyer or talk to [a nonprofit]. They really need to do that. They need to do that regularly,” Berger said. “If there is a new policy or if there is an enforcement action, they need to have somebody who knows what they're doing and knows their story, so they're not starting from scratch.”

Fear is spreading, particularly in cities like New York and Chicago, where diverse communities could be targeted for high-profile enforcement, and Berger said those concerns are valid.

“I don’t think every undocumented person in New York or Chicago could be removed, because that’s too logistically complicated, but individuals could be, and there will be a lot of fear,” he said.

Trump has also reignited his push to end birthright citizenship, another move that could have far-reaching consequences but will likely face court challenges, Berger said.

 “A suit was filed last night in New Hampshire by a young family who was expecting, and if birthright citizenship is taken away, then that child will be born here in the U.S. without status, without access to medical care, without the ability to work, and the court battles are beginning,” Berger said.