ANNAPOLIS, Md. (AP) — Maryland Rep. Elijah E. Cummings, a sharecropper's son who rose to become the powerful chairman of a U.S. House committee that investigated President Donald Trump, died early Thursday of complications from longstanding health issues, his office said. He was 68.

Cummings was a formidable orator who passionately advocated for the poor in his black-majority district , which encompasses a large portion of Baltimore as well as more well-to-do suburbs.

As chairman of the House Oversight and Reform Committee, Cummings led multiple investigations of the president's governmental dealings, including probes in 2019 relating to the president's family members serving in the White House.

Trump responded by criticizing the Democrat's district as a "rodent-infested mess" where "no human being would want to live." The comments came weeks after Trump drew bipartisan condemnation following his calls for Democratic congresswomen of color to get out of the U.S. "right now," and go back to their "broken and crime-infested countries."

Cummings replied that government officials must stop making "hateful, incendiary comments" that only serve to divide and distract the nation from its real problems, including mass shootings and white supremacy.

"Those in the highest levels of the government must stop invoking fear, using racist language and encouraging reprehensible behavior," Cummings said in a speech at the National Press Club.

Cummings' long career spanned decades in Maryland politics. He rose through the ranks of the Maryland House of Delegates before winning his congressional seat in a special election in 1996 to replace former Rep. Kweisi Mfume, who left the seat to lead the NAACP.

Cummings was an early supporter of Barack Obama's presidential bid in 2008. By 2016, Cummings was the senior Democrat on the House Benghazi Committee, which he said was "nothing more than a taxpayer-funded effort to bring harm to Hillary Clinton's campaign" for president.

Throughout his career, Cummings used his fiery voice to highlight the struggles and needs of inner-city residents. He was a firm believer in some much-debated approaches to help the poor and addicted, such as needle exchange programs as a way to reduce the spread of AIDS.