His whirlwind foreign trip over, President Donald Trump is facing old and new political and policy challenges at home.
Schiff was particularly concerned about a Washington Post report that the back channel would have been conducted at a Russian diplomatic facility to avoid monitoring in United States communications systems.
Trump, who had been uncharacteristically quiet on Twitter during his nine-day trip overseas, resumed his favorite past-time with fury on Sunday, dismissing allegations of Russian Federation ties as "fake news" and "fabricated lies". And back in the 1980s and 1990s, Trump often used a pseudonym to talk to reporters for stories about himself.
Trump plans to make an announcement within the week on his climate position, the official said. They said any secret communications could have left Kushner vulnerable to manipulation by Russian officials. But in a series of tweets early Sunday, he accused reporters of inventing stories and sources.
The White House faces mounting questions about potential ties between Russian Federation and Trump's presidential campaign, which are also the subject of criminal and congressional investigations.
McMaster says that in general, "we have back channel communications with a number of countries" and doing that "allows you to communicate in a discreet manner".
"I would not be concerned about it", he added.
James Clapper, the former national intelligence director, described the general nature of communications between Kushner and Russian Federation as a red flag. "Every explanation offered so far has been wholly unsatisfying", Finer said.
"That is indicative of espionage activity of an American citizen that is working in league with a hostile government", he told MSNBC.
Mosul residents deny findings of US probe into Iraq strike
They claim there were no IS fighters in the house struck by the USA bomb and that IS militants had not rigged it with explosives. Coalition forces are already adapting to ISIS' tactic of using trapped civilians to maximize collateral damage, Isler said.
Kushner made his secret communications proposal on December 1 or 2 at Trump Tower in NY, according to intercepts of Russian communications reviewed by USA officials, the Post reported late Friday. The intent was to connect Trump's chief national security adviser at the time, Michael Flynn, with Russian military leaders, a person familiar with the discussions told the AP. White House officials declined to comment on May 27.
The New York Times said the channel was never established.
The Senate committee's request was first reported by The Washington Post.
While the recent firing of FBI Director James Comey and an ongoing inquiry into ties between his campaign and Russian Federation were subjects Mr Trump wanted to avoid discussing, that imperative was only heightened by revelations in the closing days of the trip about the FBI's growing interest in engagement with Russian Federation by Mr Trump's son-in-law, Jared Kushner.
As CBS2's Hazel Sanchez reported, Trump was back on USA soil and back on the defensive Sunday.
More lawyers with deep experience in Washington investigations are expected to be added, along with crisis communication experts, to help the White House in the weeks ahead.
The Post and other media have been careful to note that their sources did not say Kushner was a "target" of the investigation, nor that he was accused of any wrongdoing.
The president, who has often weighed in angrily about stories suggesting ties between his campaign officials and Russian Federation, has not responded specifically to the Kushner allegations.
The meeting with the Russian ambassador occurred when Kushner was not yet a government employee, and the effort's secrecy gave the appearance that he and other senior Trump aides were not sharing their moves with the Obama administration.