United Healthcare CEO Brian Thompson has been embroiled in several scandals and allegations of corruption over the years. Here are some of the main issues surrounding Thompson and United Healthcare:

Overcharging Medicare and Medicaid: United Healthcare has been accused of overcharging government healthcare programs, such as Medicare and Medicaid, by millions of dollars.
In 2017, the company agreed to pay $1.3 billion to settle false claims allegations related to its Medicare Advantage plans.

Antitrust violations:

United Healthcare has faced antitrust lawsuits alleging that the company engaged in anti-competitive practices to maintain its market dominance. In 2019, the Justice Department sued United Healthcare for allegedly conspiring with other insurers to raise the prices of prescription drugs.

Kickback schemes:

United Healthcare has been accused of participating in kickback schemes with healthcare providers. In 2016, the company agreed to pay $1.6 million to settle allegations that it gave improper inducements to providers in exchange for patient referrals.

Data breaches:

United Healthcare has experienced several high-profile data breaches, compromising the personal information of millions of customers. In 2017, the company disclosed that the personal data of nearly 50 million people had been exposed in a cyberattack.
Executive compensation: Brian Thompson's compensation has been a point of contention for many. In 2020, he received a total compensation package of $21.1 million, which included a base salary of $1.5 million and a bonus of $16.1 million. Critics argue that this level of compensation is excessive, especially given the company's alleged misconduct.

These allegations and scandals have raised concerns about the integrity and accountability of United Healthcare and its leadership under Brian Thompson. Critics argue that the company's actions have negatively impacted consumers, healthcare providers, and the overall healthcare system, while enriching the company and its executives.