Its because they realize it is hopeless. This guy has to prove he is innocent. And that is impossible to do, which is why those evil scum can take the money with impunity.
No, It's because the ACLU only takes cases that hurt the conservative original intent of this country's foundings... they never have and never will take a case to help an honest citizen who was denied their right to keep and bear arms, or the citizen who has been discriminated upon by having her bible study meeting closed down by the city/county... they only support flag burners and criminals attacking the government for unjust causes... Not saying it's not hopeless, just that it's not their reason for not helping...