WASHINGTON (AP) — Americans are living longer, and Republicans want to raise the Medicare eligibility age as part of any deal to reduce the government's huge deficits.

But what sounds like a prudent sacrifice for an aging society that must watch its budget could have some surprising consequences, including higher premiums for people on Medicare.

Unlike tax hikes, which spawn hard partisan divisions, increasing the Medicare age could help ease a budget compromise because President Barack Obama has previously been willing to consider it. A worried AARP, the seniors' lobby, is already running ads knocking down the idea as a quick fix that would cause long-term problems. House Democratic Leader Nancy Pelosi, D-Calif., doesn't like it either.