The repeal of Glass-Steagall in 1999 (LO7) a) had the objective of allowing banks, securities firms, and insurance companies to merge and to sell each others' products b) will result in a huge expansion in the number of financial institutions doing business in the United States c) will result in the same abuses that led to the passage of the original act in 1929 d) will make it much harder for U.S. financial institutions to merge

The Gramm-Leach-Bliley Act (GLBA), enacted in 1999, played a pivotal role in reshaping the financial services industry in the United States. At its core, it overturned the Glass-Steagall Act's longstanding restriction preventing the combination of commercial and investment banking activities. This legislative change opened the gates for banks, securities firms, and insurance companies to converge and offer an array of financial services.

The act was geared towards modernizing financial services by integrating various financial sectors, thus reflecting the increasingly blurred lines between different financial services. It enabled institutions to expand their service offerings, foster innovation, and arguably, improve efficiency by allowing one-stop shopping for consumers seeking financial products.

However, with deregulation comes the need for stringent oversight to prevent the financial system from engaging in excessive risk-taking that could jeopardize consumer protection and economic stability. The GLBA also set forth provisions for protecting consumers' personal financial information, known as the Financial Privacy Rule, and established rules regarding the safeguarding and sharing of such data.

Since the early 1930s, commercial and investment banking in the United States had been separated by the Glass-Steagall Act. This legislation came into being after the 1929 stock market crash, ensuring that commercial banks, which took deposits and made loans, were distinct from investment banks, which were involved in securities trading and underwriting.

The separation aimed to minimize conflicts of interest and protect ordinary depositors from the risks of securities markets. However, as financial markets evolved, many argued that this separation hindered competitiveness and innovation.

With the repeal of Glass-Steagall via the Gramm-Leach-Bliley Act, banks could now engage in a much broader set of activities. This integration was believed to offer economies of scale and scope, but it also raised concerns about creating institutions too big and interconnected to fail, effectively tying the health of the economy to the well-being of these financial conglomerates.

The trend towards financial institution mergers was significantly boosted by the repeal of Glass-Steagall. Before the repeal, commercial banks and investment banks operated separately, but after the Gramm-Leach-Bliley Act came into force, it paved the way for a wave of consolidations in the financial sector.

These mergers allowed the creation of diversified financial services companies that offered a suite of products, including loans, investment products, insurance policies, and more. The idea was that by offering a comprehensive range of services, institutions could increase their customer base, enhance customer loyalty and become more competitive on a global scale.

Despite these potential benefits, one must also consider the risks involved, such as the concentration of financial power and the emergence of 'too big to fail' institutions, which could have dire implications during economic downturns. Consequently, this spurred debates and calls for more diligent regulatory oversight.

After the repeal of Glass-Steagall, the importance of financial regulation and monitoring took center stage. The integration of different financial services increased the complexity of institutions and markets, thereby intensifying the risk of systemic failures.

Legislative measures, such as the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, were enacted in response to the financial crisis of 2007-2008 to enhance the government's regulatory powers. These measures aimed to limit certain risky practices and ensure financial stability by, for example, requiring stress tests for banks and the creation of the Consumer Financial Protection Bureau.

Effective financial regulation is a balancing act. It requires robust oversight to detect and deter risky behaviors that could lead to crises, while also fostering an environment that permits innovation and growth in the financial sector. As the industry continues to innovate at a rapid pace, especially with the advent of fintech, regulators have the ongoing challenge of adapting rules to constantly changing market dynamics to protect both the economic system and consumer interests.