PHOTO: CNN
Now playing
01:37
Heck: Stronger evidence against Trump than evidence that sun rises in East
Now playing
02:56
Some GOP lawmakers are defying Capitol security measures
Now playing
02:41
Loyal Texas Trump voters want Biden to be less divisive
Now playing
01:33
Chuck Schumer announces timeline for Trump impeachment
WASHINGTON, DC - JANUARY 22: U.S. President Joe Biden signs an executive order as Vice President Kamala Harris looks on during an event on economic crisis in the State Dining Room of the White House January 22, 2021 in Washington, DC. President Biden spoke on his administration
WASHINGTON, DC - JANUARY 22: U.S. President Joe Biden signs an executive order as Vice President Kamala Harris looks on during an event on economic crisis in the State Dining Room of the White House January 22, 2021 in Washington, DC. President Biden spoke on his administration's response to the economic crisis that caused by the COVID-19 pandemic and signed two executive orders. (Photo by Alex Wong/Getty Images)
PHOTO: Alex Wong/Getty Images North America/Getty Images
Now playing
02:31
Biden zeroes in on the teetering economy in first week
White House senior adviser Kevin Hassett speaks with reporters at the White House, Friday, June 19, 2020, in Washington. (AP Photo/Alex Brandon)
White House senior adviser Kevin Hassett speaks with reporters at the White House, Friday, June 19, 2020, in Washington. (AP Photo/Alex Brandon)
PHOTO: Alex Brandon/AP
Now playing
05:08
Ex-Trump official who supports Biden stimulus plan speaks out
Dick Durbin 0122
Dick Durbin 0122
PHOTO: CNN
Now playing
01:41
Sen. Durbin: We can't pass anything without bipartisanship
Guard Soldiers were ordered to move from the cafeteria to the parking garage
Guard Soldiers were ordered to move from the cafeteria to the parking garage
PHOTO: Obtained by CNN
Now playing
01:42
Photos show National Guard confined to parking garage
Rep. Alexandria Ocasio-Cortez cpt 0121
Rep. Alexandria Ocasio-Cortez cpt 0121
PHOTO: CNN
Now playing
02:42
Ocasio-Cortez: We still don't feel safe around other members of Congress
mccarthy
mccarthy
Now playing
04:18
McCarthy contradicts himself on Trump's role in insurrection
Now playing
06:30
'Do you feel you were duped?': Burnett presses GOP lawmaker
White House press secretary Jen Psaki speaks during her first press briefing at the White House, Wednesday, Jan. 20, 2021, in Washington. (AP Photo/Evan Vucci)
White House press secretary Jen Psaki speaks during her first press briefing at the White House, Wednesday, Jan. 20, 2021, in Washington. (AP Photo/Evan Vucci)
PHOTO: Evan Vucci/AP
Now playing
01:48
WH press secretary vows transparency and honesty on first day
Now playing
02:30
Pences share a laugh with Vice President Harris and her husband
Now playing
01:12
Kamala Harris sworn in as Vice President
President Donald Trump speaks at Joint Base Andrew on Wednesday, January 20.
President Donald Trump speaks at Joint Base Andrew on Wednesday, January 20.
PHOTO: CNN
Now playing
02:00
See Trump's final message as President as his family looks on
(CNN) —  

Democratic Rep. Denny Heck of Washington state announced his retirement on Wednesday, saying in an announcement that “the countless hours I have spent in the investigation of Russian election interference and the impeachment inquiry have rendered my soul weary.”

In his role on the Intelligence Committee, Heck has been in the spotlight during the high-profile public hearings with current and former administration officials as part of the House Democrat-led impeachment inquiry into the Ukraine scandal.

“The countless hours I have spent in the investigation of Russian election interference and the impeachment inquiry have rendered my soul weary,” Heck said in a post on Medium. “I will never understand how some of my colleagues, in many ways good people, could ignore or deny the President’s unrelenting attack on a free press, his vicious character assassination of anyone who disagreed with him, and his demonstrably very distant relationship with the truth.”

Heck has represented Washington’s 10th congressional district since 2013 on Capitol Hill and previously served in the Washington state legislature. The Democratic lawmaker serves on the House financial services and intelligence committees.

“With the bulk of the Intelligence Committee’s work on impeachment behind us, Thanksgiving week provided me with a good opportunity for rest and reflection,” Heck wrote in the post.

Reflecting on his tenure in Congress, the lawmaker went on to say, “It is incredible work but it takes its toll. Being away so much from Paula, my best friend and wife of nearly 44 years, can be lonely even when I am in a crowded room. At our age, however many ‘good years’ we have left together is not a growing number.”

Heck added later, however, that “none of this discouragement in any way diminishes the bone-deep gratitude I feel for the privilege to serve in Congress and for all who have made this incredible journey possible – my family, the voters of the 10th District, my staff and all the countless people who have extended a thousand kindnesses along the way. So, in less it hasn’t been clear enough: Thank you! But it is time for me to retire.”