Kerry: 'Absolute shock' over Trump discussing Biden with Ukraine leader

Former Secretary of State John KerryJohn Forbes KerryBudowsky: Trump October surprise could devastate GOP Hillicon Valley: Democrats request counterintelligence briefing | New pressure for election funding | Republicans urge retaliation against Chinese hackers National security leaders, advocacy groups urge Congress to send election funds to states MORE on Monday said he’s in “absolute shock” over reports that President Trump asked Ukrainian leaders for information on former Vice President Joe BidenJoe BidenTrump campaign emails supporters encouraging mask-wearing: 'We have nothing to lose' Cuba spells trouble for Bass's VP hopes Democrats want Biden to debate Trump despite risks MORE, a 2020 White House hopeful. 

“My reaction is one of absolute shock and amazement that, apparently, within hours or days of the Mueller testimony, the president is on the telephone putting American foreign policy in hock while he extorts the leader of another country to Russia's advantage,” Kerry said Monday on MSNBC’s “Morning Joe.”

A call between Trump and the Ukrainian president has dominated discussion in Washington amid reports that Trump asked for help in getting dirt on Democratic presidential front-runner Joe Biden. 

Trump and administration officials have denied the reporting, but have not released a copy of the whistleblower complaint or a transcript of the call.

The Wall Street Journal reported that during the call Trump asked Ukrainian President Volodymyr Zelensky to look for dirt on Biden. 

Trump has not denied that he urged Ukraine to investigate the former vice president. 

The president, on Sunday, doubled down on his call for Biden's dealings with Ukraine to be investigated, insisting there was no quid pro quo involved in the talks with the Ukrainian president, calling it a "perfect conversation."

Former special counsel Robert MuellerRobert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE has said he found evidence that Trump’s 2016 campaign welcomed foreign assistance from Russia during the election. 

The allegations over Trump’s call with Ukraine have raised new calls by some House Democrats for an impeachment inquiry.

Speaker Nancy PelosiNancy PelosiHillicon Valley: Trump backs potential Microsoft, TikTok deal, sets September deadline | House Republicans request classified TikTok briefing | Facebook labels manipulated Pelosi video Trump says he's considering executive action to suspend evictions, payroll tax Trump won't say if he disagrees with Birx that virus is widespread MORE (D-Calif.) has remained hesitant to call for impeachment but warned of a “new stage of investigation” if the Trump administration blocks the whistleblower.