Graham: Trump Jr. emails 'disturbing' and 'very problematic'

Sen. Lindsey GrahamLindsey Olin GrahamTop Louisiana health official rips Cassidy over ObamaCare repeal bill Senate Dems hold floor talk-a-thon against latest ObamaCare repeal bill Overnight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions MORE (R-S.C.) on Tuesday expressed concern after new details emerged regarding Donald TrumpDonald John TrumpBiden slams Trump over golf gif hitting Clinton Trump Jr. declines further Secret Service protection: report Report: Mueller warned Manafort to expect an indictment MORE Jr.'s meeting last year with a Russian lawyer. 

"Anytime you're in a campaign and you get an offer from a foreign government to help your campaign, the answer is no," Graham told reporters.

"So I don't know what Mr. Trump Jr.'s version of the facts are. Definitely — he has to testify. That email is disturbing."

Trump Jr. on Tuesday released a chain of emails highlighting his conversations about setting up the meeting with a Russian lawyer offering compromising information on Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonBiden slams Trump over golf gif hitting Clinton Overnight Cybersecurity: Equifax hit by earlier hack | What to know about Kaspersky controversy | Officials review EU-US privacy pact Overnight Tech: Equifax hit by earlier undisclosed hack | Facebook takes heat over Russian ads | Alt-right Twitter rival may lose domain MORE.

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The release came after The New York Times reported Trump Jr. was told before the meeting that the harmful information on Clinton was part of a Russian government effort to help his father’s presidential campaign.

Graham said Tuesday he also finds it "odd" that the woman Trump Jr. and other campaign aides met with "knew absolutely nothing."

"I don't know why they would pick somebody for him to meet with that didn't have any information about the Clinton campaign," he said.

"But on it's face, this is very problematic. We cannot allow foreign governments to reach out to anybody's campaign and say we'd like to help you. That is a nonstarter."

Graham acknowledged he knows Trump Jr. and the president's son-in-law Jared Kushner, who also attended the meeting last year, are new to politics.

"But this is going to require a lot of questions to be asked and answered," Graham said.

The Trump White House has maintained there was "no collusion" between the campaign and Russians who the intelligence community said hacked Democratic groups to help Trump win the election. 

In the chain, Trump Jr. was offered “some official documents and information that would incriminate Hillary and her dealings with Russia would be very useful to your father.”

The president’s oldest son responded at one point, “If it’s what you say I love it.”