We don't have the same problem here. We have a few plants that are the exact same design as the one in Japan. Big difference is, we keep the diesel fuel for the diesel generators underground, where it is safe. They had it out back where it got washed away by a tidal wave. Granted, no wave was ever supposed to reach that high, but it did.
We have never had a commercial plant like Chernobyl. Every plant in the US has a containment structure. Speaking of which, the containment structure at Three Mile Island did its job and when the smoke cleared, the public received no more radiation than they would have it they had been out in the Sun.
Three Mile Island was caused by human error. Operators overrode the system and caused the problem. They can no longer do that. Every plant in the US had TMI modifications that took that control away and gave it to the computer. If something goes wrong, the unit scrams and doesn't ask for permission.
Nuclear power is clean, safe, and efficient. If it wasn't for the same uninformed, tree hugger, activists that are now clamoring for clean, safe, and efficient power, we could be getting 80% of our power from nukes instead of 20%.