Mr Trump's critics say that he is trampling over legally protected asylum rights and argue that resources should be channeled into higher-tech alternatives to a wall.
But the rancor has spiraled under Mr Trump's abrasive administration and is set to go even higher after January 3 when the Democrats take over the House of Representatives, following their midterm election victory. But he was ignored and his microphone was soon cut off.
"That was a legitimate request and I should have been recognised", McGovern told reporters later. "This is the way they've been running this place".
The shutdown didn't stop people from visiting the White Sands National Monument in southern New Mexico, where hundreds of unauthorized visitors have in recent days climbed over a fence to enter the monument, according to The Alamogordo Daily News. The shutdown complicates things for essential employees who planned trips for the holidays: According to the Office of Personnel Management rules, employees deemed essential or otherwise exempted from their respective agency furloughs can't take any vacation or sick days.
The wall dispute coincided with the expiration of funding for about 20 per cent of the Government.
The shutdown that began on Saturday - the third of 2018 - caused a lapse in funding for nine of 15 Cabinet-level departments and dozens of agencies, including the departments of Homeland Security, Transportation, Interior, Agriculture, State and Justice. The remaining 80 percent is fully funded and is unaffected by the shutdown.
US Customs and Border Protection Commissioner Kevin McAleenan warned Wednesday that the agency was unable to cope with the thousands of arrivals, as most facilities were built decades ago for men arriving alone.
Paul Waldman: 'This is what we were afraid of with Trump'
Trump initially praised Mattis for serving as defence secretary "with distinction" and achieving "tremendous progress". He also served as the deputy assistant secretary of state for Iraq and Iran, and worked under Republican George W.
This demand was accepted by the House, but rejected by the Senate where some Democrat support would be needed to pass the bill.
When House Democrats assume the majority next Thursday for the new session of Congress, they plan to "swiftly" bring up a bill to reopen the government, Hammill added.
Earlier this month, he said he would be "proud to shut down the government" over wall funding.
On Twitter Trump also sought to blame Democrats for the shutdown.
"Nearly all of the Assistant United States Attorneys and staff members in the Civil Division of this Office will be furloughed unless their services are necessary to protect the interest of the United States", Oestericher wrote in a letter to McMahon.
The Reuters/Ipsos poll gathered responses from 2,440 adults, including 946 Democrats and 846 Republicans across the US. It has a credibility interval, a measure of the poll's precision, of two percentage points for the entire sample and four points for members of either political party.