Being strongly anti illegal immigration is among their positions, yes, but I think OP is more referring to their position of erecting additional.barriers in the

Being strongly anti illegal immigration is among their positions, yes, but I think OP is more referring to their position of erecting additional.barriers in the way of legal immigration. They have discovered it is easier to win political points by making current legal immigrants illegal and deporting them, than addressing what people think of as "illegal immigration". But they get to call it the same thing :-)