Avi K, all talk of removing the president through the 25th amendment is silly. The 25th amendment requires all the same people who are needed to remove him by impeachment, *plus* a whole lot more.
To remove a president by impeachment you need:
1. A simple majority of the House
2. Two thirds of the senate.
To remove a president by the 25th amendment over his objections, you need:
1. The vice president and the majority of the cabinet
2. Two thirds of the House
2. Two thirds of the senate.
The 25th amendment is designed to remove a president who does not object but is incapable of resigning, or to remove a much-loved and respected president who unfortunately doesn’t understand the need to go, but without embarrassing him by accusing him of wrongdoing.