Sigourney Weaver

Looks like Political Animals' Bud isn't the only Hammond who's been embroiled in an affair.

In this exclusive flashback clip from Sunday's episode, Elaine (Sigourney Weaver) yells at her son T.J. (Sebastian Stan) for being involved with a married man — who also happens to be a Congressman. And when the press goes public with the story it threatens to destroy everyone involved.

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"This is my territory. Remember, I was in love with your father," Elaine says.

"I'm in love with him mom!" T.J. cries. "You're the most important woman in the world and you can't help me!"

Watch the clip below. Political Animals airs on Sunday at 10/9c on USA.