In five of the earliest lawsuits against Trump's ban, federal judges blocked the government from denying entry to anyone from the affected countries with a valid visa.

The campaign features a new letter each day from Christian, Muslim, Buddhist, Jewish, Hindu and Sikh scholars.

Trump's recent executive orders threatening to withhold federal funding from communities with sanctuary policies produced fears that more immigration restrictions are coming.

In boarding school, Mr. Gorsuch participated in the informal debates, where he was routinely teased, accused of being “a conservative fascist.”

“Part of who we are is trying to be political without being partisan; principled but not ideological," said moderator John Carr.

Though the rallies were billed primarily as protests against the invitation to President Donald J. Trump, protesters also condemned the new U.S. administration’s travel ban against seven majority-Muslim countries.