The Houston Chronicle reported Friday that Sen. Kay Bailey Hutchison (R-TX) has sent a letter to President Bush asking him to reverse NASA’s decision to cancel the SM4 Hubble servicing mission. The letter was accompanied by a petition signed by 26 former astronauts, including Scott Carpenter, Gene Cernan, and Dick Gordon, asking for the SM4 reinstatement. Both make the arguments that the benefits of a Hubble servicing mission outweigh the risks, and that robotic servicing of Hubble would not be as effective as a shuttle mission. (SpaceRef.com has a copy of the letter and petition.) Interestingly, Hutchison has apparently elected not to cosponsor S.Res 324, the resolution introduced by Sen. Barbara Mikulski (D-MD) two months ago that called for an independent study of the SM4 cancellation decision, and to continue preparations for that mission while the study was in progress. To date the only cosponsors for the resolution are Sam Brownback (R-KS) and Paul Sarbanes (D-MD), who signed on earlier this month.