U.S. Rep. Emanuel Cleaver, D-Mo., traveled from Washington to Missouri's statehouse on Thursday to urge Republican lawmakers to reject a congressional redistricting plan he said would reopen decades-old racial divisions in Kansas City and weaken minority representation.

Cleaver told a Senate committee the map, advanced by Republican legislators and publicly backed by former President Donald Trump, uses Troost Avenue as a dividing line that historically separated Black and white residents. He called the choice of the street as a boundary "damaging" and warned that the changes would dilute Black and minority voters in his district.

The Republican-led state House approved the revised districts on Tuesday during a special session called by Republican Gov. Mike Kehoe. A Senate committee endorsed the plan Thursday, and Republican leaders changed chamber rules to move quickly toward a full vote expected as soon as Friday. Trump posted on his social media site Wednesday: “The Missouri Senate must pass this Map now, AS IS, to deliver a gigantic Victory for Republicans in the ‘Show Me State,’ and across the Country. I will be watching closely.”

Under the proposed map, the Kansas City district Cleaver represents would lose portions west of Troost Avenue to the neighboring district held by Republican Rep. Mark Alford. The shift is designed to give Republicans a better chance of picking up an additional House seat in Missouri, where GOP lawmakers currently hold six of eight U.S. House seats.

Cleaver, who served more than two decades in Congress after becoming Kansas City's first Black mayor, said the plan threatens longstanding bipartisan cooperation in Missouri's congressional delegation and could have unintended political consequences for Republicans. "If you fight fire with fire long enough all you’re going to have left is ashes," he told senators, adding later that he plans to challenge the map in court and will run for reelection next year regardless of the district's contours.

Republican state Sen. Rick Brattin defended the map on Thursday, saying a map that could yield seven GOP-held seats provides "a right representation of the state of Missouri." GOP leaders have argued the changes align congressional districts with the party control that dominates most of the state's local governments.

The stakes extend beyond Missouri. Democrats need to gain three seats to flip control of the U.S. House, and Republican strategists have prioritized maps that could help offset the historical trend of the president's party losing seats in midterm elections. The Missouri plan follows recent, partisan redistricting moves in other states, including Republican-led efforts in Texas and Democratic-led changes in California.

Legal and political observers say the plan could alter the partisan balance in neighboring districts as well. While some maps could produce a seven-seat Republican delegation, Cleaver and other critics argue that diluting minority voters in one district could make adjacent districts more competitive and possibly provide opportunities for Democrats.

Missouri's redistricting fight is the latest flashpoint in a broader national dispute over how district lines are drawn and whether they protect minority representation or are engineered for partisan gain. After Thursday's committee endorsement, attention turns to the full Senate vote and the likely legal challenges Cleaver and other Democrats have signaled they will pursue.