BY REBECCA KHEEL – 01/30/17 06:22 PM EST
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THE TOPLINE: Fallout from President Trump’s executive order on refugees continued to roil Washington on Monday.

At the Pentagon, Defense Secretary James Mattis is compiling a list of Iraqis who helped U.S. troops during the war there who he wants to exempt from the ban.

On Friday, Trump signed an executive order that prohibits foreign nationals from seven predominantly Muslims from entering the United States for at least 90 days. Those countries are Syria, Iraq, Iran, Sudan, Somalia, Yemen and Libya.

The order also bars Syrian refugees from entering the United States indefinitely and halts all refugee resettlements for four months while official aim to tighten the vetting process, which is already the strictest in the world.

Iraqis who were granted what’s known as special immigrant visas have been caught in the ban, with some detained at U.S. airports over the weekend. The special immigrant visa program allows Iraqis and Afghans who helped the United States as interpreters and other roles during the wars in those countries to resettle in America.

The inclusion in the ban of Iraqis who helped U.S. troops intensified the backlash to the order, with veterans, lawmakers and others highlighting that aspect of the order in announcing their opposition to the ban.

Read more about the Pentagon’s work on exemptions here.

LAWMAKERS BACK MATTIS: As Mattis works on his list, a bipartisan group of lawmakers has written to Trump in support of the exemptions.

“It is important that a special exception is made for the consideration of individuals who directly supported American personnel overseas,” the lawmakers wrote in a letter to Trump on Monday. “We respectfully ask that you take this action to ensure these individuals are not put in any further danger.”

The letter was led by Rep. Duncan Hunter (R-Calif.), who was one of the first lawmakers to endorse Trump, and Rep. Adam Kinzinger (R-Ill.), who remained critical of Trump throughout the campaign. Both are Iraq War veterans.

It was also signed by Reps. Steve Stivers (R-Ohio), Earl Blumenauer (D-Penn.), Seth Moulton (D-Mass.) and Peter Welch (D-Vt.). Stivers and Moulton are also Iraq War veterans.

Read more about the letter here.

SENATE DEMS SEEK TO BLOCK ORDER: Meanwhile, a group of Senate Democrats introduced a bill Monday they hope will unravel the order.

The Hill’s Jordain Carney has the story:

Sen. Chris Murphy (D-Conn.) spearheaded the bill, which would withhold funding to keep the administration from enforcing the order.

“Trump’s discriminatory executive order does not reflect who we are as Americans, and it puts our service members and the American public at risk,” Murphy said in a statement.

He added that “both Republicans and Democrats criticized Trump for campaign promises of a ban on Muslims. Now that Trump’s hateful rhetoric is reality, it’s time for all Members of Congress to stand up and support our bill.”

Democratic Sens. Maria Cantwell (Wash.), Jeff Merkley (Ore.), Richard Blumenthal (Conn.), Chris Coons (Del.), Brian Schatz (Hawaii), Tammy Baldwin (Wis.) and Chris Van Hollen (Md.) are backing the bill.

Read more here.

TRUMP DEFENDS ORDER: As backlash to the order grows, Trump and his administration have been defending the order.

In trademark morning tweets, Trump blamed problems at airports over the weekend on protestors and the “tears of Senator [Chuck] Schumer,” not his order.

Minority Leader Schumer held back tears during a press conference Sunday where he called the order called the order “mean-spirited and un-American.”

Read more of Trump’s reaction here.

ON TAP FOR TOMORROW:

The Senate Foreign Relations Committee will hold a hearing on policy options for North Korea with testimony from outside experts at 10 a.m. the Dirksen Senate Office Building, room 419. http://bit.ly/2kND31P

Please send tips and comments to Rebecca Kheel, rkheel@thehill.com Follow us on Twitter: @thehill, @Rebecca_H_K

  exempt from ban, James Mattis, list of Iraqis, SECDEF