This seems kind of strange. They test this anyway, so why is it an issue? My bottom line would be keep government out of it and let people and the industry decide what works best.
Check it out:

Should homosexual men – a group with the highest HIV-infection rates in the nation – be allowed to donate blood?

That’s the question the federal government is considering this week as it re-evaluates whether it should lift the 30-year ban on homosexual blood donation.

On Thursday, members of the Department of Health and Human Services Advisory Committee on Blood and Tissue Safety and Availability will revisit the issue.

But a leading pathologist is warning that the move would heighten the risk of spreading HIV to other Americans.

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