A day before he was convicted of securities fraud, “Pharma Bro” Martin Shkreli’s presence was being felt as the Senate passed a bill targeting the price-gouging that made him infamous.

The former pharmaceutical CEO’s move two years ago to raise the price of an anti-malarial drug called Daraprim by 5,000 percent overnight enraged the country. Experts say it also helped shed light on a particular brand of price gouging in the pharmaceutical industry.