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

Former Secretary of State John KerryJohn Forbes KerryOVERNIGHT ENERGY: Sanders-Biden climate task force calls for carbon-free power by 2035 | Park Police did not record radio transmissions during June 1 sweep of White House protesters | Court upholds protections for Yellowstone grizzly bears Biden-Sanders 'unity task force' rolls out platform recommendations Sanders-Biden climate task force calls for carbon-free power by 2035 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 commutes Roger Stone's sentence Hillicon Valley: Facebook considers political ad ban | Senators raise concerns over civil rights audit | Amazon reverses on telling workers to delete TikTok House Democrat warns about 'inaccurate' polls: Trump voters 'fundamentally undercounted' 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 PelosiThe Hill's Morning Report - Presented by Facebook - Justices rule Manhattan prosecutor, but not Congress, can have Trump tax records Supreme Court rulings reignite Trump oversight wars in Congress Pelosi on Baltimore's Columbus statue: 'If the community doesn't want the statue, the statue shouldn't be there' 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.