Embattled Republican U.S. Rep. George Santos told Piers Morgan he has been a “terrible liar” on Monday while continuing to contradict reports on his heritage, education and personal background.

“I’ve been a terrible liar on those subjects,” Santos told Morgan during a television interview. “What I tried to convey to the American people is I made mistakes of allowing the pressures of what I thought and needed to be done… this wasn’t about tricking anybody.”

Morgan told the congressman he was “struck” that Santos believed his lies would not be unearthed at some point. Santos admitted he did not think people would find out, especially since the GOP nominated him to run for the same seat two years prior.

“I’ll humor you this, I ran in 2020 for the same exact seat for Congress and I got away with it then,” Santos said.

Santos lost the 2020 election for the state’s 3rd Congressional District to former U.S. Rep. Tom Suozzi (D-Glen Cove). He defeated Democrat Robert Zimmerman for the seat in November.

Santos has been criticized for claiming to be Jewish, though the congressman reiterated to Morgan that he always claimed to be mostly Catholic and partially Jewish. He also claimed that his “party favor jokes” telling people he was “Jew-ish” have been met with great reception in the past.

The Republican Jewish Coalition, after having Santos attend a November event, has withdrawn their support of the congressman.

“People were hysterically laughing,” Santos said in reference to telling event attendees he was “Jew-ish.” “It was funny to them, they loved it.”

Santos also took a stand against the claims that he scammed a homeless, disabled veteran out of thousands of dollars that would have been used to care for the man’s service dog.

Richard Osthoff said that he met Santos, who introduced himself as Anthony Devolder, in 2016 while living in a tent on the side of a New Jersey highway.

Osthoff’s service dog, Sapphire, was suffering from a life-threatening stomach tumor, treatment for which would cost $3,000, the veteran told Patch.

A veterinary technician told Osthoff to use Friends of Pets United, a pet charity headed up by Santos under the Anthony Devolder alias.

Osthoff said he never saw any of the funds after a GoFundMe was set up and subsequently deleted once it got close to hitting the $3,000 goal.

Sapphire died in January 2017, he said.

“I went through two bouts of seriously considering suicide, but thinking about leaving her without me saved my life,” Osthoff told Patch. “I loved that dog so much, I inhaled her last breaths when I had her euthanized.”

“I’ve never met this man,” Santos told Morgan when asked about the GoFundMe page. “I’ve never took on this case and I never took the money from his dog.”

Osthoff told CNN on Tuesday that he had spoken to Santos on the phone multiple times and exchanged dozens of text messages between him and the congressman to law enforcement officials. The FBI is currently investigating the matter.

The New York Times, earlier this year, obtained the two-page resume in which Santos claims he graduated in the top 1 percent with a 3.89 GPA at Baruch College. It was also reported Santos received a master’s degree in business from New York University with a GMAT score of 710.

Santos said he “did not know where the GMAT” score was obtained from and said he “did not attain a college education.”

“That, regrettably so, is one of my biggest regrets in life,” Santos told Morgan.