Christmas Tree Bill

A Christmas tree bill is a piece of legislation that, like a decorated tree, becomes "hung" with numerous riders, earmarks, and amendments benefiting specific constituencies, industries, or members of Congress. The metaphor entered common congressional usage in the United States during the 1950s and 1960s, particularly in the Senate, where germaneness rules are looser than in the House and amendments need not relate directly to the underlying bill.

Christmas tree bills typically emerge in a few recognizable forms:

• Tax measures, where narrow credits, exclusions, or extenders are attached to a broader revenue bill.
• Tariff or trade bills, historically a frequent vehicle for product-specific duty suspensions.
• End-of-session omnibus or "must-pass" legislation, such as continuing resolutions, appropriations packages, or the annual National Defense Authorization Act, where leadership tolerates unrelated additions to secure votes.

The practice is closely related to logrolling — vote-trading among legislators — and to the use of riders, provisions inserted into bills they would not pass on their own. Critics argue Christmas tree bills obscure accountability, inflate spending, and bypass committee scrutiny. Defenders note that bundling can be the only practical way to move narrowly beneficial but uncontroversial provisions through a crowded legislative calendar.

A frequently cited early example is the Excise, Estate, and Gift Tax Adjustment Act of 1970, which President Richard Nixon publicly criticized as a "Christmas tree" of special-interest tax provisions before signing it. Since the 1974 Congressional Budget Act and subsequent reforms — including the line-item veto experiment struck down in Clinton v. City of New York (1998) and various earmark moratoria adopted in the House and Senate after 2010 — procedural tools have constrained but not eliminated the practice.

For researchers, identifying a Christmas tree bill usually requires comparing the introduced text to the enrolled version and tracing amendments through the Congressional Record and committee reports.