Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) is calling for the White House to release a transcript of 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's call with his Chinese counterpart Xi Jinping from June after a report that Trump mentioned her and fellow Democratic presidential candidate 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 on the call.

"Trump can say what he wants about me, but it's outrageous that any president would sell out the people of Hong Kong behind closed doors," Warren tweeted.

"The public must see the transcript of Trump's call with Xi. And we need a leader who will stand up for our values," she added.

Trump can say what he wants about me, but it's outrageous that any president would sell out the people of Hong Kong behind closed doors.



The public must see the transcript of Trump's call with Xi. And we need a leader who will stand up for our values. — Elizabeth Warren (@ewarren) October 3, 2019

Warren weighed in after CNN reported Thursday that Trump mentioned Biden and Warren's "political prospects" during a June 18 call with Xi.

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During the call, Trump also reportedly told the foreign leader that he would stay quiet about protests in Hong Kong while the U.S. and China pursued trade talks.

The record of the call was stored in a secure electronic system where Trump's July call with Ukrainian President Volodymyr Zelensky was also kept, CNN reported.

The report comes amid heightened scrutiny over the president's efforts to get foreign powers to investigate his political rivals heading into the 2020 election.

Trump on Thursday publicly encouraged China and Ukraine to look into Biden, similar action to what sparked House Democrats to launch a formal impeachment inquiry in September.

“China should start an investigation into the Bidens,” Trump said in front of cameras Thursday, adding that Ukraine should also look into the Bidens.

Biden's campaign slammed Trump's comments in a statement, calling them "a grotesque choice of lies over truth and self over country."

Trump has for days defended his July 25 conversation with the Ukrainian leader amid scrutiny over his remarks, which were at the heart of a whistleblower complaint filed later.

Trump asked Zelensky to investigate Biden and encouraged him to work with his 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 on the matter, according to a memo released by the White House.

Trump and his GOP allies have been pursuing unproven corruption allegations against Biden involving a prosecutor in Ukraine who was looking into an energy company on whose board his son Hunter Biden sat. No evidence of wrongdoing has emerged on the part of either Biden.

"Biden went around bragging that he stopped the prosecution so if you can look into it... It sounds horrible to me," Trump was quoted telling the Ukrainian president in the White House summary released last week.

Warren and Biden are considered front-runners in a crowded field vying for the 2020 Democratic presidential nomination.