blackeyeblitzar 8 hours ago

Looks Like the answer is “yes”, at least based on precedent. From the article:

> Eugene Volokh, professor of law emeritus at the University of California, Los Angeles, explains that the Immigration and Nationality Act of 1952 provides for the denial of entry and deportation of "any alien who…endorses or espouses terrorist activity or persuades others to endorse or espouse terrorist activity or support a terrorist organization." Nadine Strossen, former president of the American Civil Liberties Union and senior fellow at the Foundation for Individual Rights and Expression, tells Reason that Trump's executive order "clearly is based on federal statutory authority, so one cannot make the argument that the president is exceeding his constitutional powers."

But also the article is in reference to a person that did more than just exercise speech. They encouraged violence and terrorism against people of a religious or ethnic background, with numerous incidents of violence caught on video, and led an illegal occupation of property.