GREGG JARRETT: Anti-Israel agitator Mahmoud Khalil can't use the First Amendment as a shield for lawlessness

It is a popular misconception that our right to free speech in America is without limitation. 

You cannot hide behind the First Amendment and deploy it as a shield for lawlessness. Speech that is used for illegal activity is never protected. Supporting a terrorist organization or advancing that group’s propaganda is one such example that finds no shelter in free speech, particularly for non-citizens.  

That is the Trump administration’s argument in the case of Mahmoud Khalil, the Palestinian...