Los Angeles (CNN)—Catholics in the nation's largest archdiocese will hold a special prayer this weekend about immigrants at a time when Donald Trump has put the issue on center stage. Specifically, their prayers will counter anti-immigration views as the Los Angeles archdiocese holds a special cathedral Mass to affirm the humanity and plight of immigrants. The annual service was planned before the presidential candidate made incendiary remarks about illegal immigration, and the Mass in recognition of immigrants won't address Trump's remarks. Still, the service comes as Archbishop José H. Gómez of Los Angeles took exception with Trump, who described Mexicans...