As she explained to a Senate Judiciary subcommittee on Monday, Flynn's falsehoods "created a compromise situation, a situation where the national security adviser essentially could be blackmailed by the Russians".
Further, said Klobuchar, the Trump administration made a decision to keep Flynn on an additional 18 days after Yates' warning, "and in fact, two days after having this warning allowed him to sit in on an hour-long telephone call between the president of the United States and [Russian President] Vladimir Putin".
Still, in the short term, the testimony of Yates likely means another lost day ahead for the White House as it uses up time and political energy brushing off a new round of questions and allegations about ties to Russian Federation.
Spicer noted that Yates, who was sacked January 30 for failing to enforce the travel ban, was appointed by the Obama administration and was a strong supporter of Trump's rival, Democrat Hillary Clinton.
Yates testified that she reached out to and met with White House Counsel Donald McGahn about Flynn, who was sacked in February for misleading Vice President Mike Pence about his conversations with the Russian ambassador to the United States.
What was his role at the White House in those 18 days? Less than 48 hours after the November election, Obama warned Trump not to hire Flynn, whom the former President had fired in 2014 for temperament issues (and let's face it, because everyone knew he was off).
"We weren't the only ones that knew all of this, that the Russians also knew about what General Flynn had done and the Russians also knew that General Flynn had misled the Vice President and others", Yates said, relating the contents of her conversation with McGahn. But President Donald Trump waited 18 days before showing Flynn the door for lying to Pence.
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Moreover, despite Macron's can-do attitude, the enthusiasm for the former investment banker has its limits. She said she hoped and believed that cooperation with Macron would progress "in exactly this spirit".
Spicer continued, "I think if you flip this scenario and say, what if we had just dismissed someone because a political opponent of the president had made an utterance, you would argue that it was pretty irrational to act in that manner".
Democratic Sen. Sheldon Whitehouse of Rhode Island has accused the White House of being more interested in protecting President Donald Trump from scandal than safeguarding national security. "After that time, they did what you should do - frankly, an element of due process - and reviewed the situation".
The controversy began during the transition period when Flynn spoke over the phone with Russian Ambassador Sergey Kislyak.
Mr Trump hit back by dismissing suggestions that his team colluded with Russian Federation as a "hoax", and calling the congressional investigations into Russia's interference in the United States election a taxpayer- funded "charade".
"The underlying conduct that Gen. Flynn had engaged in was problematic in and of itself", she testified Monday.
Spicer frequently has chided the White House press corps for failing to ask more questions about the source of illegal leaks to the press.
"He could face criminal prosecution if he lied to the Federal Bureau of Investigation, yes".
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