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

Former Secretary of State John KerryJohn KerryOvernight Energy & Environment — High court will hear case on water rule Kerry warns about efforts to blunt climate change: 'We're in trouble' Biden's second-ranking climate diplomat stepping down 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 BidenFox News reporter says Biden called him after 'son of a b----' remark Peloton responds after another TV character has a heart attack on one of its bikes Defense & National Security — Pentagon puts 8,500 troops on high alert 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) MuellerAn unquestioning press promotes Rep. Adam Schiff's book based on Russia fiction Senate Democrats urge Garland not to fight court order to release Trump obstruction memo Why a special counsel is guaranteed if Biden chooses Yates, Cuomo or Jones as AG 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 PelosiSenators huddle on Russia sanctions as tensions escalate Schumer requests Senate briefing on Ukraine amid Russia tensions Biden rushes to pressure Russia as Ukraine fears intensify 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.