Brookings Institution fellow Elaine Kamarck on Friday compared President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's rhetoric on immigration to "the boy who cried wolf."

"I think that the president at this point with immigration is like the boy who cried wolf," Kamarck, who also directs the Center for Effective Public Management, told Hill.TV's Jamal Simmons on "What America's Thinking."

"He's overusing it. He's overhyping it. He's over-scaring people. I just don't see this working at this hysterical level that he's got it to," she said, citing the president's rhetoric toward the Central American migrant caravan attempting to reach the U.S.-Mexico border.

"Already you see interviews with these troops at the border who are going to miss Thanksgiving at home, and who've already taken off their flak jackets because there is no invasion coming," she said.

Trump used the issue of immigration as a way to rally the Republican base in the lead up to November's midterm elections.

He homed in on the migrant caravan moving north through Central America, warning of an "invasion" of migrants. Trump claimed the group contained MS-13 gang members and, at one point, said there were “unknown Middle Easterners” among them."

No evidence has emerged that MS-13 gang members or migrants from the Middle East were among members of the caravan.

Trump ordered the deployment of troops to the southern border and announced last week that migrants who cross the border outside of designated points of entry would not be allowed to seek asylum.

— Julia Manchester