Actor Patrick Gallagher shot back that Swanson was a "diva," while some Canadians took offense to her nickname.
Kristy Swanson says critics of Trump's tweets telling lawmakers of color to "go back" where they came from are the same ones "attacking" the color of his skin.
The Republican actress had an unexpected response to outrage over migrant children being separated from their families.
Producers say they will move the controversial show to another location.
The conservative actors are taking part in a reading which pledges to expose the "hate-filled, sleazy, juvenile, corrupt text messages" of the FBI agents investigating Trump.