you have two groups of people: -normie conservatives who want less immigration and can be mollified by simply reducing the current rate of immigration -"radicalized" conservatives who can no longer be mollified by simply reducing immigration and land anywhere between "send them all back" and "overthrow the government" the problem is that the longer this goes on, the more members of the former group are converted into members of the latter group, who are very difficult to "deradicalize" once they reach that point. hence center right parties across the west all suddenly trying to placate the former: the latter are growing in size and vocality at a rate that's worrying them
United States