Oppose a War And Get Sent To Fight (or Die) In It?

"Congress shall make no law...abridging the freedom of speech, or of the press, or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances." That is the law that Congress must follow. Every member of government "swears" that they will obey that law. Why is there a bill in Congress designed to send anti-war college protesters to Gaza?