Yes. Learn more about Citizens United.

There is nothing inherently wrong with lobbying. Lobbying encourages people to play an active role in their government and it’s protected by the First Amendment as our right “to petition the government.” But because politicians are so dependent on money from lobbyists and the special interests they represent to fund their political careers, Congress ends up passing laws to keep the lobbyists and their clients happy, instead of laws that benefit the American people.

Learn more: Is Lobbying Good or Bad?

“The revolving door” refers to when members of Congress leave office and immediately start working for lobbying firms where they can influence legislation. This has become shockingly common: In the 1970s, less than 5% of retiring legislators went on to become lobbyists. Now, half of retiring senators and a third of retiring House members do.

Learn more: 5 Crazy Facts About Lobbyists

While the law prohibits Congress from engaging in insider trading, members of Congress are still allowed to buy and sell individual stocks while in office. Lawmakers are privy to massive amounts of information to which the general public simply doesn’t have access to. These same politicians are responsible for crafting legislation that regulates, or deregulates, American corporations.

Read more: Why is Congressional Stock Trading Legal?

Dark money refers to any money spent to influence an election that comes from an undisclosed source. Most dark money goes toward political ads meant to influence voters. We’re all familiar with the constant barrage of advertising during election season, but we often don’t know who is paying for it. The secrecy behind this persuasive messaging makes it impossible for American voters to consider the credibility and motives of the wealthy donors funding it. Dark money enables billionaires and corporations to buy our elections without us even realizing.

Read more about dark money.

Democracy Dollars, sometimes known as Democracy Vouchers, is a public campaign financing policy that gives voters money to give to a certain candidate of their liking. It allows the public to become more invested in a candidate’s campaign and also works to curb the influence of big donors and dark money.