Old news here, but now that the Republicans have used fiscal sanity as their justification for everything, why not repeal DADT? After all, it cost at least $363.8 million dollars from 1994 to 2003 to uphold DADT. (This report states that this figure is just the lower bound)
These senators pointed to a fact that most supporters of Don’t Ask Don’t Tell, otherwise avid opponents of spending, refuse to acknowledge: Don’t Ask Don’t Tell costs are astronomical when measured not just in broken lives and ruined careers, but, less metaphorically, also in dollars and cents.

As a 2009 report released by the Williams Institute at the UCLA School of Law explained, the military spends between $22,000 to $43,000 per person to replace the nearly 13,000 service members discharged under Don’t Ask Don’t Tell and train their replacements. It concluded that the policy has cost the military between $290 million and more than half a billion dollars since its inception.

As Collins noted, these numbers do not include the administrative and legal costs of investigations and hearings, and the military schooling, such as pilot or linguistic training, of discharged members.

Most discharges occurred within two and a half years of the commencement of service – long before the government could begin to recoup their investment in the fired service member.

Add to that the costs that numerous ongoing military missions have incurred by the discharges of those with critical, difficult to replace skills, such as proficiency in Arabic. According to a 2005 General Accounting Office Report, 8 percent of the total number of the discharges between 1994 and 2003 had critical skills, such as training in a foreign language.

Moreover, the 2009 Williams Institute report notes that lifting Don’t Ask Don’t Tell restrictions would attract an additional 36,700 individuals to the military. This would not only reduce the need for recruitment efforts – and costs – but also help staff critical military missions.

This could greatly improve the overall functioning of the military during a time of increased personnel shortages and reduce the setbacks military missions may suffer because of personnel shortages.

Oh, wait a minute: I forgot that Republicans don't want their defense budget cut at all. The fiscal hawks have to keep their sharp talons.