Rep. Elijah Cummings (D-Md.) — who spent 23 years on Capitol Hill and represented parts of Baltimore — passed away early on Thursday at age 68 after fighting health issues, his office said in a statement.

Cummings, the son of a sharecropper, rose to become a powerful House Democrat after a career as a lawyer and judge.

He was also a vocal critic of President Donald Trump.

Cummings died at Gilchrist Hospice Care, a Johns Hopkins Hospital affiliate, according to reports.

He had been in ill health for the past few years, several outlets noted — and had traveled around the Capitol in a motorized cart. He also used a walker.

The congressman was chair of the House Oversight and Reform Committee and one of the most influential Democrats in Washington.

He was also a leading voice in the Congressional Black Caucus.

He had been playing a major role in House Democrats’ efforts to impeach Trump from office.

Tributes to the congressman’s life and career began pouring in almost immediately after the news broke.

Related: Cummings Believed That God Called Him to This Moment

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President Trump himself shared heartfelt thoughts and “warmest condolences to the family and many friends” on the congressman’s passing.

See his tweet below:

And see these other tweets with more information and reaction to the early Thursday morning news.

Please share your thoughts.

This article has been updated with the latest tweets.