Huma Abedin, the longtime confidant to Democratic presidential front-runner Hillary Clinton, took aim at Donald Trump's proposal to ban Muslims from entering the United States in an email with the subject line: "I'm a proud Muslim." "Donald Trump is leading in every national poll to be the Republican nominee for president. And earlier today, he released his latest policy proposal: to ban all Muslims from entering our country," wrote Ms. Abedin, in an email Monday evening to Mrs. Clinton's supporters. "I'm a proud Muslim — but you don’t have to share my faith to share my disgust."