"So while we were able to ask and answer a lot of different kinds of questions, there were an terrible lot of questions we weren't able to answer based on this very novel theory of executive privilege", Himes said on CNN.
Jackson says Trump is healthy and should remain so for the remainder of his presidency.
Among other details, Jackson's summary included the president's height and weight-75 inches and 239 pounds.
"This was the first time we saw a witness refuse to answer the questions under the instructions of the White House or claim that the White House might later invoke privilege", Schiff said.
"We're going to get answers from Mr. Bannon", said Conaway. It was unclear, however, whether Mr Bannon will be forced to testify. Bannon also was removed last week as the top executive at Breitbart News, the alt-right news site that has championed Trump's brand of populism.
"We've been cooperating fully with these ongoing investigations and encourage the committees to work with us to find an appropriate accommodation in order to ensure Congress obtains information necessary to its legitimate interests", she said.
A book published this month, "Fire and Fury" by Michael Wolff, asserted that even Mr. Trump's own advisers and associates questioned the president's fitness for office.
Trump has repeatedly said there was "no collusion" between his campaign and Russian Federation, although none of the months-long congressional investigations or Mueller has reached any conclusions.
Steve Bannon former advisor to President Trump arrives at a House Intelligence Committee closed door meeting
The book includes harsh comments from Bannon on the controversial June 2016 Trump Tower meeting between campaign officials and a Russian lawyer.
Separately on Tuesday, Bannon spent hours meeting behind closed doors with members of the House of Representatives Intelligence Committee.
Mr Bannon, 64, was forced out from his job advising Mr Trump in August, and his actions since then - most notably supporting the failed Senate campaign of Alabama Republican Roy Moore, but also his comments in the Wolff book - have left him increasingly isolated in conservative circles.
"Of course I authorized the subpoena", Rep.
Bannon will not attempt to stonewall Mueller, according to reports.
Mr Mueller's team has already interviewed Mr Trump's son-in-law and adviser, Jared Kushner, his former chief of staff, Reince Preibus, and his former press secretary, Sean Spicer.
Uber to introduce mandatory rest breaks for United Kingdom drivers
They say that the policy is not issuing the main reason which is of low pay which forces the drivers to spend more time on roads. The tech company told them that the average number of hours worked by its 50,000 drivers is 30 per week.
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