Hillary Clinton: 'The president asked a foreign power to help him win an election. Again.'

Former Secretary of State Hillary Clinton Hillary Diane Rodham ClintonGiuliani says 'of course' he asked Ukraine to look into Biden seconds after denying it Sanders hits 1 million donors Democrats will not beat Trump without moderate policy ideas MORE blasted President Trump Donald John TrumpMarine unit in Florida reportedly pushing to hold annual ball at Trump property Giuliani clashes with CNN's Cuomo, calls him a 'sellout' and the 'enemy' Giuliani says 'of course' he asked Ukraine to look into Biden seconds after denying it MORE on Friday after his personal attorney Rudy Giuliani Rudy GiulianiGiuliani clashes with CNN's Cuomo, calls him a 'sellout' and the 'enemy' Giuliani says 'of course' he asked Ukraine to look into Biden seconds after denying it George Conway: If Trump pushed Ukraine to investigate Biden, he 'should be impeached and removed from office' MORE said he asked Ukraine to look into former Vice President Joe Biden Joe BidenGiuliani clashes with CNN's Cuomo, calls him a 'sellout' and the 'enemy' Giuliani says 'of course' he asked Ukraine to look into Biden seconds after denying it Trump whistleblower complaint involves Ukraine: report MORE.

“The president asked a foreign power to help him win an election. Again,” Clinton, the 2016 Democratic presidential nominee, tweeted.

The president asked a foreign power to help him win an election.

Again.https://t.co/EjkE84oCCF — Hillary Clinton (@HillaryClinton) September 20, 2019

Clinton was responding to Giuliani's interview on CNN the previous night in which he said "of course" he asked Ukraine to look into Biden, the current Democratic presidential front-runner for 2020.

The former secretary of State and 2016 Democratic nominee also appeared to be referencing one of Trump’s 2016 campaign stops in which he encouraged Russia to look for Clinton’s emails from a private server.

“Russia, if you're listening, I hope you're able to find the 30,000 emails that are missing. I think you will probably be rewarded mightily by our press,” Trump said in 2016.

Giuliani gave CNN’s Chris Cuomo Christopher (Chris) Charles CuomoGiuliani clashes with CNN's Cuomo, calls him a 'sellout' and the 'enemy' Giuliani says 'of course' he asked Ukraine to look into Biden seconds after denying it Chelsea Handler: Trump is 'perfect example of white privilege' MORE conflicting answers on Thursday night as to whether he asked Ukraine to investigate Biden’s reported connection to the country, initially denying that he asked Ukraine to investigate the former vice president before seconds later saying he did.

In 2016, while he was vice president, Biden threatened to withhold $1 billion in U.S. loan guarantees unless Ukraine removed a top prosecutor, The New York Times reported.

The Ukrainian prosecutor, who was later voted out on corruption allegations, was looking into an energy company whose board included Biden’s son Hunter. While Joe Biden did push for the prosecutor's dismissal, the move reflected the position of several other Western countries.

Giuliani said last month that he had spoken to a Ukrainian official about Biden’s reported role in the prosecutor’s dismissal.

"The only thing I asked about Joe Biden is to get to the bottom of how it was that Lutsenko ... dismissed the case against AntAC," Giuliani said, referring to former Ukrainian prosecutor General Yuriy Lutsenko and the Ukrainian-based Anti-Corruption Action Centre.