On April 19, 2019 Senators Dianne Feinstein (D-CA) and Susan Collins (R-ME) on behalf of 16 other Senators sent a letter to Ambassador Reema bint Bandar bin Sultan, the newly arriving Saudi Ambassador to the United States. The letter broadly raises concern as to reports of the treatment of women in the Kingdom of Saudi Arabia, and specifically calls for the dismantling of the Guardianship System, as well as an end to the mistreatment of detained female activists. All four female Senators running for the Democratic nomination for President in 2020 (Klobuchar, Warren, Gillibrand, Harris) signed the letter.