The issue focused on tax laws and political speech. A final court decision on the issue was expected in late March.

In May, U.S. Supreme Court Justice Anthony Kennedy wrote in what he called the most political court since the Supreme Court's 1973 decision in Citizens United v. Federal Election Commission.

The court said that $7.5 billion in political spending was spent on political advertising in 2014.

In 2014, more than $6.5 billion in political spending was spent on political