The courts are fraught with peril for Obama. First there is the PR hit. All but Obamabots must ask 'Why is he doing this?' Moreover, if the Justice Department sues, he will be using the taxpayers to fund his campaign's legal issues. And suing will be tantamount to admission that he is illegible.
And this will not be legal action against the likes of a crackpot dentist, but one of the united States exercising its Constitutional duty. Then there is this thing called Discovery, the prospect of which repels the Regime as does sunlight a vampire.