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Introduction to Financial Services: Insurance


This In Focus provides a summary of the insurance market
and regulatory system in the United States.

Market Structure
Insurance companies constitute a major segment of the U.S.
financial services industry. The insurance industry is often
separated into two parts:

*  life and health insurance (life/health), which also
   includes annuity products, and

*  property and casualty insurance (property/casualty),
   which includes most other lines of insurance, such as
   homeowners  insurance, automobile insurance, and
   various commercial lines of insurance purchased by
   businesses.

According to the insurance rating agency A.M. Best, 2019
net premiums for the more than 300 life/health companies
(with over 800 subsidiaries) in the United States totaled
$645.2 billion, with admitted assets totaling $7.07 trillion.
The 2019 net premiums for the more than 1,000
property/casualty insurance companies (with over 2,800
subsidiaries) totaled $637.1 billion, with admitted assets
totaling $2.2 trillion.

Despite the large numbers of insurance companies, both
life/health and property/casualty insurances are also
reasonably concentrated industries, with the top 25
life/health company groups writing 60% of overall
premiums  and the top 25 property/casualty company groups
writing 69% of overall premiums. Figure 1 displays the
market share of the top 25 insurers versus the rest of the
market in 2017.

Figure  I. Insurance Market Concentration
(net premiums; $ billions)

                    1op  25    ERestof Industry

    Property/
    Casualty

    Life/Health                     $25n24     $645.15

Source: Figure created by CRS using data from A.M. Best for 2019.

Different lines of insurance present different characteristics
and risks. Life insurance typically is a longer-term
proposition with contracts stretching over decades and
insurance risks that are relatively well defined in actuarial
tables. Annuity products, which are also usually offered by
life insurers, present similar long-term insurance risks.
Particular life insurance and annuity products, however,
may be based on securities, such as stocks or bonds, and


Updated January 4, 2021


thus may present shorter-term risks more similar to
investment products for both the consumer and the insurer.
Property/casualty insurance typically is a shorter-term
proposition with six-month or one-year contracts and
greater exposure to catastrophic risks.

Health insurance has evolved in a different direction than
life and property/casualty insurance. Many health insurance
companies  are heavily involved with health care delivery,
including negotiating contracts with physicians and
hospitals, rather than purely insurance operations. The
health insurance regulatory system is much more influenced
by the federal government through Medicare, Medicaid, the
Employee  Retirement Income Security Act (ERISA; P.L.
93-406), and the Patient Protection and Affordable Care
Act (ACA;  P.L. 111-148) than life and property/casualty
insurance. The following discussion focuses on
property/casualty and life insurance.

Role   of Federal and State Governments
The role of the federal government in regulating private
insurance is relatively limited compared with its role in
banking and securities. Insurance companies, unlike banks
and securities firms, have been chartered and regulated
solely by the states for the past 150 years. There are no
federal regulators of insurance akin to those for securities or
banks, such as the Securities and Exchange Commission
(SEC) or the Office of the Comptroller of the Currency
(OCC), respectively.

Each state government has a department or other entity
charged with licensing and regulating insurance companies
and those individuals and companies selling insurance
products. States regulate the solvency of the companies and
the content of insurance products as well as the market
conduct of companies. Although each state sets its own
laws and regulations for insurance, the National Association
of Insurance Commissioners (NAIC)  acts as a coordinating
body that sets national standards through model laws and
regulations. Models adopted by the NAIC must be enacted
by the states before having legal effect, which can be a
lengthy and uncertain process. The states have also
developed a system of guaranty funds, designed to protect
policyholders in the event of insurer insolvency.

The limited federal role stems from both Supreme Court
decisions and congressional action. In the 1868 case Paul v.
Virginia, the Court found that insurance was not considered
interstate commerce and thus not subject to federal
regulation. This decision was effectively reversed in the
Court's 1944 decision, U.S. v. South-Eastern Underwriters
Association. In 1945, Congress passed the McCarran-
Ferguson Act (15 U.S.C. §§1011 et seq.), specifically
preserving the states' authority to regulate and tax insurance


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