The Jewish director of the Anti-Defamation League (ADL), which campaigns against anti-Semitism and other bigotry, said Friday that he would register as a Muslim if Donald Trump establishes a database of Muslims in America.

"The day they create a registry for Muslims is the day that I register as a Muslim because of my Jewish faith, because of my commitment to our core American values, because I want this country to be as great as it always has been," Jonathan Greenblatt told AFP.

During his campaign, President-elect Trump variously called for banning all Muslim visitors to the United States, subjecting those in the country to loyalty tests and even for some to be deported.

Asked on MSNBC in November last year whether the White House should institute a database system to track Muslims in the country, Trump replied, "Oh, I would certainly implement that, absolutely."