The few who would assimilate and bring value are tolerable. The mass that cling to third world culture and values should get trebucheted.

A foreigner who actually wants to adopt american values is more valuable than commie natives - which is why the commies want the immigration process to be made easier. The difficulty of LEGAL immigration serves a purpose. So do quotas, that should never allow a foreign group to come close the replacement rate of the native group. Small numbers of high quality will assimilate and not damage the host culture. That is not what we've had for many decades now.