Sen. Ted Cruz Rafael (Ted) Edward CruzCrenshaw looms large as Democrats look to flip Texas House seat SCOTUS confirmation in the last month of a close election? Ugly The Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' MORE (R-Texas) said Sunday that “of course” it was inappropriate for President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE to call for Chinese officials to investigate former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE and his son.

Cruz was responding to a question on CBS's “Face the Nation” from host Margaret Brennan, who asked the Texas senator whether Trump’s call for Beijing to investigate the Bidens was appropriate amid his own criticisms of Beijing for human rights abuses.

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“Of course not,” Cruz responded, adding “elections in the United States should be decided by Americans and it’s not the business of foreign countries to be interfering in our elections.”

Brennan went on to ask Cruz if Trump’s personal attorney Rudy Giuliani Rudy GiulianiThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting CIA found Putin 'probably directing' campaign against Biden: report Democrats fear Russia interference could spoil bid to retake Senate MORE should testify before the Senate Judiciary Committee regarding his “shadow foreign policy” on Trump’s behalf in Ukraine.

“I don’t know what Rudy’s been saying, I do know that we should decide our elections,” Cruz responded. “I think it’d make a lot of sense for Rudy to testify before the Senate Judiciary Committee.”

.@SenTedCruz on if the DOJ should probe former Vice President Joe Biden: “I believe the Justice Department should investigate violations of law. If there's credible evidence of a violation of law, yes they should investigate and I'll tell you what I have called for.” pic.twitter.com/iCknx0tygJ — Face The Nation (@FaceTheNation) October 13, 2019

Cruz demurred on whether the Justice Department should investigate Biden, saying “I believe the Justice Department should investigate violations of law."

"If there's credible evidence of a violation of law, yes, they should investigate, and I'll tell you what I have called for," Cruz added.

He also called for transcripts to be made available of Biden’s conversations with Ukrainian officials from his time as vice president.