Fulfilling one of the most contentious promises of his 2016 election campaign, Mr Trump suspended the entire USA refugee programme for 120 days, indefinitely halted the admission of refugees from Syria and banned nationals from Iran, Iraq, Libya, Somalia, Sudan, Syria and Yemen for 90 days.
Senator Chuck Schumer of NY, the Democratic leader, called on Trump to immediately withdraw the action Sunday, saying it made the country "less humanitarian, less safe, less American".
The highest-ranking law enforcement officials from 16 USA states, including California, New York and Pennsylvania, added their voices to the chorus of condemnation at Mr Trump's order.
He'll be introducing legislation this week to "to immediately overturn this risky, hateful order", but isn't stopping there.
Senator Chris Murphy, Democrat of CT, said he would introduce legislation to overturn Trump's order by forcing him to comply with the 1965 Immigration and Nationality Act, which banned discrimination against immigrants on the basis of national origin. Federal judges have issued rulings barring authorities from deporting travellers affected by the executive order. Hameed said he stil worries for the safety of his brother who is still in Iraq.Trump signed an executive order calling for the "extreme vetting" of visa seekers from terror-plagued countries."These orders go against what America has always been about".
Families were separated and returning legal residents were blocked from returning to work and study as federal authorities struggled through the confusion around the implementation of Mr Trump's measures.
But lawmakers, including several Republicans, criticized Trump for issuing the travel ban without warning.
Schumer joined other Democrats Saturday in ripping President Donald Trump's refugee order, which was signed on Friday. "It will be up to getting more Republicans".
A handful of Republicans, including Senators Orrin Hatch of Utah, Ben Sasse of Nebraska, and Susan Collins of ME, had offered similarly cautious criticism of the measure Saturday.
McConnell stopped short of declaring his opposition to the order. "I fear that we're going to leave here without thinking of the other side of the equation". The president, he wrote, "is right to make sure we are doing everything possible to know exactly who is entering our country".
"There's a spending side of this that if we don't deal with, we're not going to come close to defending the needs of our country", he warned.