No doubt because they reject his administration as being tyrannical.
WASHINGTON, Dec. 1 - Congress has eliminated direct financing for a Justice Department program that has been the centerpiece of the Bush administration's efforts to prosecute black-market gun crimes. The move, which Congressional officials attributed to competing budget priorities, cuts federal grants to local and state law enforcement agencies in investigating and prosecuting crimes committed with guns. It also raises questions about the administration's ability to persuade the Republican-controlled Congress to support its legislative priorities, after Republicans last month blocked an intelligence overhaul backed by the White House. The administration had sought $45 million for local grants under the gun...
Defeating bills is checks and balances.
Impeachment is for criminal, tyrannical actions.
Lincoln's suspension of the writ did not meet the level of impeachment, thus was neither tyrannical nor criminal.
Bush isn't asking Congress to suspend habeas corpus and demanding they move the bill to the front of the legislative agenda as H.R. 1 or S. 1.
That would be akin to Congress listening to President Bush's address on the Iraq war last year and then killing the authorizing resolution.
Such is the confederate fantasy world.
Lincoln took the actions needed to stop the insurrection and win the war; a building consensus in the Congress and among the loyal people supported him; and the confederacy died an ignominious death.