Good luck in trying to get Congress to hold meetings on this subject. I know several people who have been trying for years. They have also tried the RICO Act and by saying Islam is seditious. To no avail. This has been tried and done. The first amendment is always their defense.
How about pointing out that Islam is not a religion nor is it a cult. It is a complete system.
Islam has religious, legal, political, economic and military components. The religious component is a beard for all the other components.
Since Islam is a totalitarian socio-political system masquerading as a religion, it is not protected under the first amendment.