Democrats on the House Select Committee investigating the Capitol riot are planning to request that telecommunications companies preserve the phone records of Trump family members and Trump-aligned lawmakers who attended the 'Stop the Steal' rally on Jan. 6, it was revealed on Monday.

The records request could determine who the committee plans to call forth as a witness.

It's not clear how the committee plans to ensure compliance from telecommunications companies with its request. The committee does have subpoena power but obtaining the records of members of Congress could set off contentious legal battles.

The committee is requesting preserved phone records of Ivanka Trump, Donald Trump Jr., Eric Trump, Lara Trump and Kimberly Guilfoyle, Don Jr.'s girlfriend. 

The committee has not made public the full list of names it is requesting, according to CNN.

Sources revealed a partial list, which included those in some way involved in the 'Stop the Steal' rally which preceded the riot.

As of now, the list includes Republican Reps. Lauren Boebert of Colorado, Marjorie Taylor Greene of Georgia, Jim Jordan of Ohio, Andy Biggs of Arizona, Paul Gosar also of Arizona, Mo Brooks of Alabama, Madison Cawthorn of North Carolina, Matt Gaetz of Florida, Louie Gohmert of Texas, Jody Hice of Georgia and Scott Perry of Pennsylvania.