The real question here is whether or not wiggers are just niggers that happen to be white or, if wiggers are their own subgroup separate from niggers entirely. In my opinion, if you act like a nigger then you are in fact a nigger no matter what color you are. What I think you should ask however is "Is transnegroism is acceptable?" and the answer is a solid yes because in U.S. history there is precedent of just the opposite occuring. Reffering specifically to a Ms. Sarah Rector who, as a child of 11 years, was brought into whitehood by the recognition of the sate of Oklahoma due to her bearing the white characteristic of having copious amounts of cash money to her name as a benefactor of oil production. Since there are instances where negro americans can be recognised as being members of the greater white community, there is no reason then that a white person bearing negrotic characteristics can't be recognised as being black.
TLDR: niggers are niggers and negroes are negroes unless oklahomo says otherwise.