Loomer is a far-right political activist and conspiracy theorist who has been described as an informal adviser to President Donald Trump.

She has been banned from several platforms over anti-Muslim posts, including Twitter in 2018 (she was reinstated in 2022), Uber, and Lyft.

• She was the Republican nominee for Florida's 21st congressional district in 2020, losing to Democrat Lois Frankel, and lost the 2022 Republican primary for Florida's 11th congressional district.

• In 2025, she was reported to have influenced the dismissal of several National Security Council officials after meeting with President Trump.