Washington, D.C. Since 2003

Cutting-Edge Constitutional Advocacy for the Issues That Matter Most

We combine deep knowledge of the Constitution with strategic government relations to deliver results for organizations navigating the most complex policy challenges.

Schedule a Consultation Explore Our Practice
0
Years of Practice
0
Clients Served
0
Success Rate %
0
States Represented
Constitutional Strategies Group office in Washington D.C.
About Our Firm

Decades of Constitutional Expertise at Your Side

Founded in 2003 by Margaret H. Whitfield, Constitutional Strategies Group was built on a singular conviction: that sound constitutional principles should inform every policy decision affecting American business and civil society.

Our team brings together former congressional staff, federal agency counsel, and constitutional law scholars to provide a multidisciplinary approach that clients trust and government officials respect.

Bipartisan relationships across the Hill with members and staff on key committees
Regulatory expertise in healthcare, energy, technology, and financial services sectors
Grassroots network of relationships spanning both chambers of Congress and federal agencies
Learn More About Us
What We Do

Our Practice Areas

Comprehensive advocacy and advisory services designed to navigate the intersection of policy, law, and governance.

Legislative Advocacy

Direct engagement with Congress to shape, advance, or block legislation impacting your industry. We draft policy positions and build coalitions.

Policy Analysis

In-depth research and constitutional analysis of proposed legislation and regulations. We provide actionable intelligence on the legal landscape.

Government Relations

Strategic counsel on Capitol Hill and in federal agencies. We leverage deep relationships to amplify your voice in the halls of power.

Court & Litigation Support

Constitutional analysis and amicus support for critical cases. We identify key constitutional questions and build compelling legal strategies.

Regulatory Affairs

Navigate complex regulatory environments with expert counsel on emerging rules, agency guidance, and federal compliance requirements.

Crisis Communications

Rapid-response messaging and strategic communications during political or regulatory crises to protect your organization's reputation.

Our Team

Leadership

Seasoned professionals with deep experience in government, law, and policy.

Margaret H. Whitfield, Managing Partner

Margaret H. Whitfield

Managing Partner

Former Chief of Staff to a Senate Committee Chair. 25 years advising on constitutional and legislative strategy.

James T. Calloway, Senior Partner

James T. Calloway

Senior Partner

Ex-House Parliamentarian. Expert in legislative procedure, coalition building, and bipartisan negotiations.

Dr. Sarah K. Ndiaye, Counselor

Dr. Sarah K. Ndiaye

Counselor

Constitutional law scholar and former federal appellate clerk. Specialist in First Amendment and Commerce Clause issues.

Ricardo A. Mendoza, Director

Ricardo A. Mendoza

Director of Strategy

15 years in regulatory affairs and policy strategy. Former advisor to multiple Fortune 500 companies on compliance.

Thought Leadership

Latest Insights

Analysis and commentary on the issues shaping American policy and governance.

Article about constitutional interpretation
Constitutional Law

The Evolution of Commercial Speech: What Businesses Need to Know in 2026

A deep analysis of recent Supreme Court decisions affecting how organizations communicate on policy issues.

March 15, 20268 min read
Article about legislative strategy
Legislative Strategy

Building Bipartisan Coalitions in a Polarized Congress

Strategies for advancing policy goals when political polarization makes consensus more challenging than ever.

February 28, 20266 min read
Article about regulatory affairs
Regulatory Affairs

Navigating the New Federal AI Regulation Framework

How emerging federal guidelines on artificial intelligence could reshape compliance for tech and non-tech firms alike.

January 12, 202610 min read
Client Testimonials

What Our Clients Say

Trusted by organizations across the public and private sectors.

"CSG's understanding of constitutional nuance gave us the edge we needed in a landmark regulatory campaign. Their work was exceptional."
RH

Robert Harrington

CEO, Meridian Technologies
"The bipartisan approach Margaret and her team bring is unmatched. They delivered results where others said compromise was impossible."
LP

Linda Park

General Counsel, NovaCare Health
"When regulatory uncertainty threatened our entire industry sector, CSG provided clarity and strategy that saved us millions."
DK

David Kim

VP Government Affairs, Pacific Energy
Get In Touch

Contact Us

Ready to discuss your advocacy needs? Reach out for a confidential consultation.

Let's Start a Conversation

Whether you are facing a complex regulatory challenge, need legislative support, or want to develop a comprehensive advocacy strategy, our team is ready to help.

Office

1201 Pennsylvania Avenue NW, Suite 800
Washington, DC 20004

Phone

(202) 555-0187

Email

info@constitutionalstrategiesgroup.com

Hours

Monday - Friday: 8:00 AM - 7:00 PM EST