Sen. Patty Murray Patricia (Patty) Lynn MurraySenate Democrats introduce legislation to probe politicization of pandemic response Trump health officials grilled over reports of politics in COVID-19 response CDC director pushes back on Caputo claim of 'resistance unit' at agency MORE (D-Wash.), the No. 3 Senate Democrat, called for House Democrats to begin impeachment inquiries on Sunday.

"I agree with my fellow members of the Washington delegation that, as we have learned about the gravity of the potential threats to our democracy identified in special counsel Mueller's report, it has become clear that the House should begin proceedings to determine whether the president's action necessitate impeachment," Murray said in a statement.

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Murray joins a growing number of Democrats calling for an impeachment inquiry after Mueller testified on the findings outlined in his 448-page report last week during House committee hearings.

Several Democratic members of Congress from the state of Washington, including Reps. Suzan DelBene Suzan Kay DelBeneDemocrats say affordable housing would be a top priority in a Biden administration On The Money: McConnell not certain about fifth coronavirus package | States expected to roll out unemployment boost in late August | Navarro blasts 'stupid' Kodak execs On The Money: Economists flabbergasted after Congress leaves with no deal | Markets rise as the economy struggles | Retail sales slow in July MORE, Denny Heck Dennis (Denny) Lynn HeckExclusive: Guccifer 2.0 hacked memos expand on Pennsylvania House races Heck enjoys second political wind Incoming lawmaker feeling a bit overwhelmed MORE, Derek Kilmer Derek Christian KilmerPelosi asks panels to draft new COVID-19 relief measure Lawmakers fear voter backlash over failure to reach COVID-19 relief deal Clark rolls out endorsements in assistant Speaker race MORE and Kim Schrier Kimberly (Kim) Merle SchrierPelosi: House will stay in session until agreement is reached on coronavirus relief Washington Rep. Kim Schrier wins primary US ill-prepared for coronavirus-fueled mental health crisis MORE, came out in support of impeachment proceedings Sunday, bringing the total to 103, according to The Hill's whip list.

Speaker Nancy Pelosi Nancy PelosiPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Trump signs largely symbolic pre-existing conditions order amid lawsuit MORE (D-Calif.) has resisted impeachment and has not changed her approach following Mueller's testimony.