Sen. Lindsey Graham Lindsey Olin GrahamSenate Republicans signal openness to working with Biden Loeffler calls for hearing in wake of Netflix's 'Cuties' Quinnipiac poll shows Graham, Harrison tied in South Carolina Senate race MORE (R-S.C.) on Saturday said he is “very worried” about President Trump’s accusation that former President Obama wiretapped Trump Tower.

“I’m very worried that our president is suggesting the former president has done something illegal,” Graham said at a town hall in Clemson, S.C.

“I’m very worried…”



Sen. Lindsey Graham speaks on Trump accusing Obama of illegal wiretapping pic.twitter.com/tP05KgXfke — BuzzFeed News (@BuzzFeedNews) March 4, 2017

“I’d be very worried if in fact the Obama administration was able to obtain a warrant lawfully about Trump campaign activity with foreign governments. It’s my job as United States senator to get to the bottom of this."

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Trump early Saturday wrote on Twitter that Obama wiretapped Trump Tower before the election, but did not provide any evidence.

“Terrible! Just found out that Obama had my ‘wires tapped’ in Trump Tower just before the victory. Nothing found. This is McCarthyism!” Trump said.

“Is it legal for a sitting President to be "wire tapping" a race for president prior to an election? Turned down by court earlier. A NEW LOW!” the president added in another tweet. “I'd bet a good lawyer could make a great case out of the fact that President Obama was tapping my phones in October, just prior to Election!”

Graham also said that if Obama legally obtained a warrant, then it would be the biggest political scandal since Watergate during former President Richard Nixon’s administration.

“The other side of the story … If the former President of the United States was able to obtain a warrant lawfully to monitor Trump’s campaign for violating the law, that would be the biggest scandal since Watergate.”

Graham faced jeers at the town hall after he said he “mostly” agrees with President Trump's agenda.