Since January 2006, Haas has worked as an independent public affairs consultant. Before that, he was Senior Vice President and Director of Public Affairs at Manning Selvage & Lee (MS&L), one of the world’s largest public relations firms. There, he served as the senior counselor for clients facing legislative and regulatory issues and as a strategic resource for clients throughout the firm.

At MS&L and on his own, Haas has worked for such clients as America Speaks, American Institute of Certified Public Accountants, The American Interest, America West Airlines, Beer Institute, Bipartisan Policy Center, Brookings Institution, Booya Studios, Business Executives for National Security, Capital One, Center on Budget and Policy Priorities, Centers for Disease Control and Prevention, Chiron, Coca-Cola Enterprises, Federal Home Loan Bank of Atlanta, Federal Paper, Ford Foundation, General Motors, GlaxoSmithKline, Government Affairs Institute, Hitachi Foundation, IBM, Imre Communications, Inova Health System, Institute for Global Therapeutics, Israel Project, James Lee Witt Associates, Jorge Scientific Corp., LeapFrog, Long Term Care Pharmacy Alliance, National Council of La Raza, New Century, Nike, Ohio Gov. Bob Taft, Ostroff & Associates, PricewaterhouseCoopers, Procter & Gamble, Quadel Consulting, Royal Philips Electronics, Sanofi-Aventis, Tax Analysts, Teach for America, TenCate, U.S. Army, Verizon, and The Word Network.