Rep. Lou Barletta Louis (Lou) James BarlettaBottom Line Ex-GOP congressman to lead group to protect Italian products from tariffs Head of Pennsylvania GOP resigns over alleged explicit texts MORE (R-Pa.) on Tuesday became the eighth GOP lawmaker to endorse Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE for president.

Barletta, an immigration hard-liner, said he sympathized with Trump's views on the issue.

As mayor of Hazelton, Pa., before coming to Congress, Barletta pushed an effort to penalize employers who knowingly hired illegal immigrants, as well as landlords who provided housing to them.

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The controversy over Barletta's policies went all the way to the Supreme Court, which ruled in 2011 that states have the right to implement their own statutes to curb illegal immigration.

"Donald Trump was criticized, the same way I was criticized, when he addressed this important issue. I hope that together we can tackle this critical national security challenge and stand up for working Americans," Barletta said in a statement.

Barletta, who was elected to the House in 2010, previously endorsed former Sen. Rick Santorum's (R-Pa.) presidential candidacy.

He called on fellow Republicans Tuesday to get behind the front-runner for his party's presidential nomination.

“As I have said before, I am discouraged that certain members of the Republican Party have spent more time trying to figure out how to stop Donald Trump than they have trying to understand why he is so popular in the first place. Voters are smart. We need to listen to the voters instead of elitists trying to tell us right from wrong," Barletta said.

Seven other GOP lawmakers have said they will support Trump: Sen. Jeff Sessions Jefferson (Jeff) Beauregard SessionsTrump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status White House officials voted by show of hands on 2018 family separations: report MORE (Ala.) and Reps. Chris Collins (N.Y.), Scott DesJarlais (Tenn.), Renee Ellmers (N.C.), Duncan Hunter (Calif.), Tom Marino (Pa.) and Tom Reed (N.Y.).