Government people always want you to fall in line and obey everything they tell you to do - unless THEY determine that they shouldn't have done it in the first place. This is absurd, both logically and under the Constitution.
"To say that an unconstitutional law must be obeyed until it is repealed, is saying that an unconstitutional law is just as obligatory as a constitutional one,—for the latter is binding only until it is repealed."
-Lysander Spooner, A Defence for Fugitive Slaves (1850)