Former New York U.S. Attorney Preet Bharara, who led several high-profile corruption cases until President Donald Trump fired him in March, said there is “absolutely” enough evidence to launch an obstruction of justice case against President Trump for his firing of FBI chief James Comey. “No one knows right now whether there is a provable case of obstruction," Bharara said. “[But] there's no basis to say there's no obstruction.”