 His practice at the firm concentrated on issues related to privacy, national security, computer security, electronic surveillance, encryption, digital commerce, and export controls.As a Supreme Court advocate, Baker founded the State and Local Legal Center, and later successfully urged that the Court adopt innovative approaches to constitutional federalism ("New York v. United States (1992)") and the intersection of trademark and copyright ("Dastar v. Twentieth Century Fox" (2003)).The Court also took note of Baker's "able representation" after appointing him to defend the decision of the United States Court of Appeals for the Sixth Circuit in "Becker v. Montgomery" (2001).