Why are there never any federal court challenges to all this anti-American crap they do in CA?
There are several federal court challenges to Kalifornia's infringements. They are tied up in the Ninth Circus Court of Appeals.
Based on an expectation that the Nordyke case would clarify the application of the Second Amendment to Kalifornia, the Ninth Circus held up several cases waiting for a decision in Nordyke.
Nordyke was also delayed, I think, by the Heller and McDonald decisions which changed the criteria that the Ninth Circus must use in deciding Second Amendment cases.
After about ten years of litigation in Nordyke, Alameda County basically folded on their prohibition against having gun shows on county property as long as potential customers were not allowed to handle the guns ( or some such nonsense).
Now the several cases which were waiting on Nordyke have to be prepared to argue from scratch regarding the Second Amendment since the Nordyke outcome didn't result in a clear decision as to how the right to keep and bear arms should apply in Kalifornia.
If I have misstated any of this I welcome correction.
At least one sheriff is being sued to overturn "may issue" of concealed carry permits. The state laws defining "assault weapons" are being challenged as unlawfully vague by a plaintiff that has been arrested TWICE for possession of a rifle which was NOT an "assault weapon". Another case argues the unconstitutionality of the gun roster which limits gun purchasers to only handguns which have been approved by the State.
There may be others which I have lost track of. I think the oral arguments before the Ninth Circus was almost a year ago on one of these cases. For this reason, I think it likely that cases from other states will reach the Supreme Court before any of the Kalifornia cases.