THERE HAS BEEN DISCUSSION in the White House of excluding the following Hill Republicans from the W.H. Christmas party this year: Sens. SUSAN COLLINS (Maine), MITT ROMNEY (Utah), LISA MURKOWSKI (Alaska) and BEN SASSE (Neb.) and Reps. ADAM KINZINGER (Ill.) and LIZ CHENEY (Wyo.). We’re told this has been reversed — that they may get an invite — but this has dominated West Wing chatter in the last few days.