I don't see what the problem is. I've worked for the government and with the government since I graduated High School 22 years ago. In the companies that I worked for, there were never any guaranteed raises, and I know of no companies that offer this deal. When times are good, raises are high. When times are bad, raises are small. Why do people who are performing service work be entitled to benefits that the public is not? Besides, I know a lot more government employees who are making more than their private sector counterparts than those who are making less. Plus, the job security and other benefits and perks that Government employees make far outweigh any alledged salary differences.
If Bush, Clinton, or any other President felt that there was a reason why the raises needed to be trimmed, that should be their call to make without a lot of people grandstanding to make points politically.