The Supreme Court’s disastrous Citizens United decision paved the way for unlimited spending in our elections. Things have gotten worse with the growth of “dark money” groups, which spend hundreds of millions on our elections without disclosing their sources of funding.

Dark money continues to thrive because our existing laws make it easy for many types of political committees to hide the true sources of their funding. Powerful groups have used dark money to pour $1 billion into federal elections since 2010.

Dark money continues to seep into executive, legislative, and even judicial elections, threatening the impartiality of state supreme courts across the country. Without transparency, voters don’t know who is trying to influence them or to whom a candidate is beholden.

It keeps getting worse. Dark money has invaded Florida’s elections and campaigns, making it difficult for voters to receive factual information. Just this month, dark money drove Congress to kill surprise medical billing legislation, despite the fact that it was backed by a bipartisan effort.