Ohio Sen. Sherrod BrownSherrod Campbell BrownHillicon Valley: Commerce extends Huawei waiver | Senate Dems unveil privacy bill priorities | House funding measure extends surveillance program | Trump to tour Apple factory | GOP bill would restrict US data going to China Senate Democrats unveil priorities for federal privacy bill On The Money: Trump asks Supreme Court to block Dem subpoena for financial records | Kudlow 'very optimistic' for new NAFTA deal | House passes Ex-Im Bank bill opposed by Trump, McConnell MORE (D) said on Sunday that he’s “not worried” about presumptive Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonAs Buttigieg rises, Biden is still the target Harris rips Gabbard over Fox appearances during Obama years Steyer, Gabbard and Yang shut out of early minutes of Democratic debate MORE being indicted over her use of a private email server while secretary of State.

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Brown, rumored to be among the contenders to be Hillary Clinton’s running mate, appeared on ABC’s “This Week.”

“I’m not worried about it,” he said, pointing to her release of emails and tax returns.

“She’s always been willing to talk to authorities.”

The FBI interviewed Clinton Saturday for three and a half hours as part of the ongoing investigation.

The interview does not signal whether or not the Justice Department will press charges, but Brown said he doesn't think an indictment is coming. 

"I don't think it will happen," he said. 

Brown also called last week's meeting between Attorney General Loretta Lynch and former President Bill ClintonWilliam (Bill) Jefferson ClintonFeehery: Pivoting to infrastructure could help heal post-impeachment wounds Press: Ukraine's not the only outrage The 2 events that reshaped the Democratic primary race MORE "unfortunate." 

"I wish it hadn't happened. But I think the FBI will do its job... And I think that -- I think there won't be an indictment. And I think that means she did what many secretaries of State have done in the past."

"I mean, she released more emails and more pages of emails and more records than any of her predecessors of secretary of State, even before she was actually running for president. I think that speaks to her integrity."

Brown then launched into an attack against Clinton’s likely general election rival, presumptive GOP presidential nominee Donald TrumpDonald John TrumpFive takeaways from the Democratic debate As Buttigieg rises, Biden is still the target Leading Democrats largely pull punches at debate MORE, saying “elections are about contrasts.”

"I think what the story is missing is all that we don't know about Donald Trump. He won't release his taxes. We don't have his real healthcare records," Brown said.

"He hasn't filled in any of the blanks in what he's going to do. We see every week or two, we see another story of a small business that went out of business because Donald Trump."

--This report was updated at 10:25 a.m.