Barr was mostly asked about special counsel Robert Mueller's ongoing investigation into Russian election interference.
Barr's threat assessment came amid the Trump administration's trade talks with Beijing, which have global markets on edge.
Homeland Security Secretary Kirstjen Nielsen said on Tuesday she was working with the White House and Congress to pass legislation to fund the Coast Guard so that its workers could get paid even amid the partial government shutdown. According to the Military Times, about 43,000 Coast Guard employees are working without pay, and another 10,000 are furloughed,...
More than 40,000 immigration court hearings have been canceled since the government shutdown began, straining the nation's immigration system, while the Pentagon is directing additional funds to militarize the U.S.-Mexico border.
"I don't believe Mr. Mueller would be involved in a witch hunt," Barr said at his confirmation hearing before the Senate Judiciary Committee on Tuesday.
Most voters do see a humanitarian crisis at the border — just not necessarily the kind Trump describes, according to a Quinnipiac University poll released Monday.
Barr is likely to receive a barrage of questions from Democrats picking apart his views on the Russia probe and executive power.
Todd Eberly of St. Mary's College says there's no indication of any movement to break the political impasse in Washington over the border wall issue and U.S. President Donald Trump is not in an "advantageous position" at all.
A majority of Americans say Trump bears more blame for the shutdown than Democrats, according to three polls released Monday and Sunday.
Barr's opening testimony, which was made available a day ahead of his confirmation hearing, appears to be a direct attempt to calm Democrats about his reportedly expansive views of presidential power and his narrower view of Mueller's authority.
Congress failed to break an impasse this week over President Donald Trump's demand for more than $5 billion to build his proposed border wall.
Big political and economic obstacles stand in the way of the outcome Trump is predicting.
"For me, it's a practical issue. Is it effective? Will it work? Is it the best thing we can do to secure the border? Most of the people I talk to, including on the border, don't think it is," Maryland Rep. Steny Hoyer says.
The government shutdown record comes on the same day hundreds of thousands of U.S. workers start to miss paychecks.
California Gov. Gavin Newsom pledges the state will provide unemployment insurance benefits for furloughed workers impacted by the partial federal government shutdown.
Furloughed workers will lose over $2.2 billion in missed paychecks as the government shutdown enters day 21. The unemployment rate could jump a few tenths of a percent in January due to the impact of the shutdown.
CNBC's Ylan Mui reports on the latest news coming out of the White House.
"When I said Mexico would pay for the wall in front of thousands and thousands of people ... obviously I never meant Mexico would write a check," Trump said.
"I don't see this president backing down," Republican former House Majority Leader Eric Cantor says.
On Day 20 of the government shutdown, Trump shows no signs of relenting on his demand for more than $5 billion to build a border barrier.