Visit the following link https://www.justiceforall.org/palestine/president-biden-american-must-stand-against-apartheid/ for an easy, automated way to send pre-drafted tweets and letters to President Biden as well as your congressperson and senators.
Justice4All also has an automated way of calling all your representatives from the link above asking them to end US military aid and the additional $735 million in weapons to Israel as they continue to assault Gaza and Palestine.
Americans Against Apartheid 