7:32 AM PT -- The White House flag is flying at half-staff to honor Rep. Cummings ... and his nemesis, President Trump, even offered some kind words.
Trump tweeted, "My warmest condolences to the family and many friends of Congressman Elijah Cummings. I got to see first hand the strength, passion and wisdom of this highly respected political leader. His work and voice on so many fronts will be very hard, if not impossible, to replace."
Elijah Cummings, one of the strongest voices in Congress for decades who early on expressed outrage at the way Donald Trump was running the country, has died.
Cummings had been hospitalized earlier this week and underwent some sort of medical treatment. His office said the Congressman passed due to "complications concerning longstanding health challenges."
Cummings proudly served his Baltimore district where he grew up ... coming home every night from D.C.
He was a civil rights leader from an early age. When he was 11 he was partly responsible for integrating a Baltimore swimming pool ... as he was being hit by rocks and bottles.
Cummings attended Howard University where he became student body president and went on to get a law degree at the Univ. of Maryland. He became a member of the Maryland House of Delegates, where he became the youngest member of the Black Caucus.
He won his seat to the House in 1996, rose through the ranks and became the Chairman of the Black Caucus and Chairman of the House Oversight and Reform Committee.