Today former Democratic Alabama Gov. Don Siegelman was moved from an Atlanta penitentiary where he's been held since his federal sentencing two weeks ago on corruption charges to a new prison location that's not yet been undisclosed.

Meanwhile, his case has gone to Washington.

Rep. Artur Davis (D-Ala.), a former federal prosecutor, recently sent a letter to House Judiciary Chair Rep. John Conyers (D-Mich.) raising concerns about Siegelman's prosecution, TPMMuckraker reports. The letter called the case against Siegelman "unusually weak," with only one witness corroborating bribery charges with second-hand information. It also noted the claims made by Republican lawyer Dana Jill Simpson that Karl Rove played a role in the investigation.

A politically motivated prosecution is not implausible, Davis said, given that former U.S. Attorneys have reported being pressured to bring indictments against Democrats. Davis also noted that the Seventh Circuit scrapped a conviction of a former Democratic governor's aide in Wisconsin, calling the evidence "beyond thin."

Davis called on the committee, of which he is a member, to investigate Siegelman's prosecution:

The trading of favors for official acts is reprehensible, and stains the reputation of the political process. But it would shatter the system if a Justice Department built a culture in which prosecutors' career advancement depends on their willingness to press exotic legal theories that might advance the electoral interests of the Republican Party.