There is such a thing as a US citizen, but that does not give you immunity to commit crimes. In fact, it makes it more illegal to commit crimes.
What Immunities and privileges are afforded to citizens that are not afforded illegal aliens? If the answer is "none" as you and the other Marxists here demand, then there is no such thing as a "citizen." Not one of you can come up with anything, because you don't believe that the USA has a right to be a sovereign nation with borders.
Notice that the ones demanding immunity to commit crimes are you Stalinists, who demand that immigration law be ignored and those who violate it have complete immunity to do so.