As a Catholic, I find this activity embarrassing and outrageous. Seifert needs to brush up on Church teaching. Catholics are not obligated to support unrestricted immigration and socialism, as these people are advocating. In fact the Church recognizes the right of a nation to regulate immigration and protect its borders.
"You can enter God's Kingdom only through the narrow gate. The highway to hell is broad, and its gate is wide for the many who choose the easy way." Mat 7:13