4 is generally seen with 5 as the best, not 1.

1. He only killed one member of the cabinet. 2. That member had given nuclear weapons to terrorists who were 7 seconds away from detonating them in NYC. I'm sure if what happened in Day 8 was public, there wouldn't be as much backlash towards Jack.

It did come up before that Chloe and Adrian are lovers. There's one scene earlier in the season where Cross says "Are you going to keep bothering me with this?" and Chloe says "Oh, I think every day for the rest of your life."

Nah they didn't "turn" Tony; they held him and his wife hostage.

Season 3 didn't have a traditional mole (Jack, Tony, and Gael are working outside the system, and Tony helps the terrorist under duress, but there's no mole). Seasons 5 and 6 also don't have a traditional mole at the intelligence agency.

I don't think she would have gotten emotionally close to Jack's face to whisper to him "I'm happy with my husband."