Embattled Assemblyman Steven Brooks went to the Nevada Supreme Court late Monday seeking a mandate that he be seated in the Legislature.The legal filing argues that the Legislature lacks authority to put him on leave and banish him from the legislative building. Brooks' lawyer, Mitchell Posin, argues Brooks was elected by voters."Here, the Legislature has imposed an extra-constitutional qualification on Assemblyman Brooks' right and duty to serve his constituents, which they cannot do," Posin wrote.He argues that Brooks "should be allowed to continue his service to the voters of his district and the people of the state of Nevada."The Supreme …