He litigates campaign finance and other First Amendment cases nationwide. He is currently lead counsel in SpeechNow.org v. FEC, a challenge to federal campaign finance laws, and Sampson v. Buescher, a challenge to Colorado's ballot issue campaign finance laws. Mr. Simpson has authored numerous Supreme Court amicus briefs in a wide variety of cases and has spoken and written widely on campaign finance and other issues. Before joining the Institute for Justice, he spent five years as a litigator with the international law firm Shearman & Sterling and two years clerking in the Federal District Court for the Southern District of Florida. Mr. Simpson is a graduate of New York Law School and a member of the bars of New York, New Jersey, and the District of Columbia.