Senior appropriator and progressive stalwart James P. Moran will step down at the end of this year, making him the third House Democrat in just three days to announce his retirement.

Rep. Howard “Buck” McKeon, R-Calif., announced on Thursday that he will not seek a 12th term in California’s 25th District.

“For me, it’s time to walk away,” McKeon, chairman of the House Armed Services Committee, said at a hearing Thursday morning.

Re: Finance Committee

Wyden is in line to become chairman following the departure of Sen. Max Baucus, D-Mont., who has been tapped by President Barack Obama to be ambassador to China.

Oklahoma GOP Sen. Tom Coburn plans to leave the Senate early and will resign his seat at the end of the current Congress.

“Nothing would have been possible without Sen. Mikulski and her determination to get the green light on because people … in my state are tired of yellow and red,” said Sen. Mary L. Landrieu, D-La.