Craig

There is speculation that Sen. Craig's potential replacement won't be as friendly to immigration reform. From The Washington Times:

Regardless of the consequences for the Republican Party, many conservatives are happy to see Craig go. Conservatives have criticized Craig for his record on immigration, especially his votes in favor of the 2006 Senate immigration bill (which passed, but was blocked by the House), and this year's similar bill (which was stopped by a filibuster).
Allahpundit at Hot Air -- definitely not a member of the Larry Craig Fan Club -- did some research on Craig's rumored replacement, Lt. Gov. Jim Risch, and describes the results as "promising," due to Risch's order in December for Idaho state agencies to screen employment applicants for immigration status.