"They know that more damning evidence is likely to come out," the Ohio Democrat wrote in a New York Times op-ed.
But Sherrod Brown of Ohio added that many Republicans believe doing so would be "a distraction" during the impeachment trial.
Brown said his biggest disappointment during his 13 years in the Senate had been his current GOP colleagues emboldening of Trump.
Sens. Sherrod Brown, Ron Wyden and Gary Peters called the decision "another outrageous example" of presidential misconduct.
Whaley said she was just doing her job when the president insulted her.
After the massacre, Trump visited Ohio victims and then criticized the mayor and Sen. Sherrod Brown as “very dishonest” and “misrepresenting” his visit.
The senator originally said he wouldn’t meet with the president, who is visiting Dayton after a mass shooting took place there over the weekend.
His voice is gravelly. His suits are rumpled. And the Ohio Democrat *really* needs to smile more.
Sen. Sherrod Brown (D-O.H.) criticized Republican judicial nominations in an extraordinarily scathing address on the Senate floor.
The Ohio senator ripped Republicans for mindlessly confirming inexperienced and ideological judicial nominees for Donald Trump.