An article in the Wall Street Journal noted that new federal banking regulations “mean only a 5 percent reduction in [bank] revenue … from households with $500,000 in assets or more compared with a 35 percent decline … from customers with balances of $5,000 or less.”

a. What new banking regulations is the article referring to?

b. Why would these regulations have smaller effects on what banks earn from high-income customers than on what they earn from lowerincome customers?