Definition
A public authority is an American institutional form: a public corporation chartered by state or local legislation, governed by an appointed board rather than an elected executive, financed primarily by revenue bonds (secured by user fees rather than tax appropriations), and insulated by bond covenants from direct interference by elected officials.
The form emerged in the 1920s and 1930s — the Port Authority of New York and New Jersey (1921), the Triborough Bridge Authority (1933) — and proliferated after World War II. By 2020 the United States had thousands of public authorities operating ports, transit systems, sewer districts, sports stadiums, convention centers, and economic-development zones.
Why the form matters
The mechanism
A public authority works through four structural choices, each individually defensible and together producing extraordinary insulation:
Revenue bonds, not tax appropriations. Authorities finance capital projects by issuing bonds secured against future user fees (tolls, transit fares, port fees). The bonds are not backed by the general taxing power of the state, so the state's credit is not at risk. But the bonds also do not depend on the state's annual budget process; the authority does not have to go to the legislature each year.
Bond covenants as constitutional contracts. The bonds carry covenants — contractual promises about how revenue will be spent, how the authority will be governed, what fees can be charged. Under Article I Section 10, no state can legally impair contractual obligations. Once issued, the covenants bind the state.
Appointed boards, not elected officials. Authority boards are typically appointed by the governor or legislature to staggered, multi-year terms. Members serve for cause only; they cannot be removed by a new administration without a finding of misconduct.
Self-perpetuating revenue. User fees collected by the authority can, under most enabling statutes, be retained and reinvested in new projects. Successful authorities accumulate surpluses that fund expansion without further appropriations. Triborough's surplus by 1955 exceeded the City of New York's entire capital budget.
The Caro critique
In The Power Broker, Caro spends Topic 28 (The Warp on the Loom) and surrounding topics detailing how Moses drafted the Triborough Bridge Authority's bond covenants to maximize his own sovereignty. Specific clauses Moses inserted:
- Surplus revenue could be applied to any project the Authority defined as related to its existing function. The definition was deliberately broad.
- The Authority could refinance its own bonds with new covenants, restarting the contractual clock indefinitely.
- The chairman could be removed only for cause — a definition Moses could litigate against indefinitely.
- The Board composition was specified in ways favorable to the chairman.
Reuben Lazarus, the drafter of the original Triborough Act, told Caro three decades later — with admiration — that Moses had figured out a gimmick.
Modern proliferation
The public-authority form has spread to:
- Transportation. Port authorities, transit authorities, toll-road authorities in every major metropolitan area.
- Energy. Public power authorities (NYPA, TVA, BPA) and natural-gas authorities.
- Economic development. Industrial development authorities, redevelopment authorities, enterprise zones.
- Sports and convention infrastructure. Stadium authorities, convention center authorities.
The cumulative effect is that a substantial fraction of American public capital is now controlled by entities that are technically public, structurally private in their governance, and accountable to bondholders rather than voters.