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mercial banks to engage in a wide variety of financial serv-
ices and to permit other financial services firms to engage
in commercial banking.  The artificial walls separating
those activities should be eliminated.  Those changes are
necessary to provide greater convenience for the consumer as
well as to keep financial institutions in the United States
globally competitive.  As Table 1 shows, banks in the United
States have faced increasing competition from other finan-
cial institutions over time, and their market share has been
declining.  That share went from 62.9 percent of total as-
sets of financial institutions in 1900 to 55.9 percent in
1948 and to 25.4 percent in 1993.
Permitting commercial banking and investment banking
under one roof, however, does raise important questions
about potential conflicts of interest and about the stabili-
ty and soundness of the financial system.  Competitive mar-
ket forces and incentives can address those issues if the
institutions are sufficiently capitalized.  To survive in
the marketplace, a commercial bank must be able to develop a
reputation for fair and honest dealing with its customers;
otherwise, customers will turn elsewhere.  Pre-Glass-Stea-
gall evidence shows how banks successfully resolved the con-
flict-of-interest issue and provides insights into how mar-
ket forces would shape the involvement of commercial banks
in other financial activities.  Banks appear to have volun-
tarily developed effective "firewall" structures that pro-
vide lessons for the current debate about the appropriate
structure of activities in a financial services firm.
The recent mergers of such banking organizations as
Bank of America-NationsBank and Banc One-First Chicago are
part of a broader trend toward consolidation and rational-
ization of the structure of the U.S. banking system.  During
the past quarter century, states have been eliminating arti-
ficial barriers to the geographic expansion of banks.  That
regulatory reform culminated at the national level with the
Riegle-Neal Interstate Banking and Branching Efficiency Act
that went into effect in June 1997 and will now allow the
markets to create truly nationwide banks.  Those mergers are
helping to create efficient and convenient interstate bank-
ing networks that would have arisen 30 years ago if the
United States had not severely restricted bank branching.
Geographic and product-line diversification can provide
greater stability to the financial system and enhance its
efficiency and convenience for consumers.  Contrary to the
concerns of many consumer and community advocates, it is the
traditional U.S. system, fragmented both along product lines
and geographically, that is fundamentally anti-consumer.
The transformation of the banking industry--illustrated by