Of course I support BiBi...but if a foreign diplomat comes to the U.S. and meets with the minority party, that would be silly.
They do it all the time, as well as addressing Congress.
In Israel's parlamentary system it's traditional, and expected, that foreign officials meet with the opposition leaders. This is truely a snub, from Israel's perspective. Like Clinton sending Carville over to campaign against Bibi. And Condi knows that.