Today's news that Indiana Democratic Senator Evan Bayh will be retiring is probably bad news for much of the Democrat's legislative agenda. But when it comes to immigration, this is probably a good news day. Bayh's last vote on comprehensive immigration reform was a bad one. He voted with anti-immigration Senators to filibuster the 2007 version of comprehensive immigration reform and there is little reason to believe his vote in 2010 would be different. On the other hand, Senator Lugar, his Republican counterpart  from Indiana, is a much more likely vote in favor reform. Bayh may feel freer to vote his conscience this year now that re-election is not an issue. And it is possible, of course, that we'll get a Republican or Democratic replacement that will vote moderately on this issue. Time will tell.