California Senator Kamala Harris accused Russia of deliberately using racism to disrupt the 2016 U.S. presidential elections and provoke Americans into fighting against each another.
The president expressed an openness to receiving opposition research on his political opponents from foreign adversaries in an ABC News interview this week.
"Considering that we have met over the past two weeks for two times, that's a reason for some optimism," Russian Foreign Minister Sergey Lavrov told Secretary of State Mike Pompeo.
President Donald Trump has claimed he was given no such warning.
Election interference is not the main thing Americans should be worried about, said an adviser to the Russian president.
"I have been fully briefed on the investigation, and I look forward to director Mueller delivering the report," Whitaker said.
The president phoned a New York Times reporter after a meeting with the Russian leader at the 2017 G20 summit and said he accepted Putin's denial.
The U.S. national intelligence community is concerned, but actual interference has not yet been proven.
"There will be great and fast economic retaliation against China if our farmers, ranchers and/or industrial workers are targeted!" Trump tweeted.
"The president is the only one in the government that hasn't been paying attention to this," James Lankford told CNN.
The aircraft are Gulfstream executive planes.
In his new book, McCain explains why it's important for the president to punish Putin.
Democrats say the #ReleaseTheMemo hashtag is linked to Russian efforts to manipulate public opinion.
The bank leaks documented transactions of tens of thousands of dollars in and out of the Russian diplomatic mission.
Sixty percent of American voters feel the investigation is being conducted fairly, a poll shows.
The U.S. ambassador to the United Nations firmly told Russia, "Don't interfere in our elections."
White House officials feared evidence might be destroyed or covered up following the change in administration, a New York Times report said.