I've only recently heard of her. She has a show on TBS that, I think, just got renewed. I've only seen promos for the show, but every joke she tells is anti-Trump. Every. Single. Joke.
She is a new darling of the left because she is marginally funny and bashes Trump.
At least that is slightly more meritorious than Tina Fey who is a darling of the left because she looks like Sarah Palin and makes fun of her.
Both would be waiting tables if they weren't vocally leftist.