Supreme Court overturns Chevron decision, curtailing federal agencies' power

The Supreme Court on Friday overturned a landmark decision that gave federal agencies broad regulatory power.

The 6-3 decision on the so-called, 40-year-old Chevron decision upends the agencies' authority to issue regulations unless Congress has spoken clearly, according to CBS News. 

The court split along conservative-liberal ideological lines in the dispute, with Chief Justice John Roberts writing for the conservative majority, the news outlet also reports.

The crux of the Chevron decision states federal agencies should be allowed to fill in the details when laws aren’t crystal clear.

Opponents of the decision have argued the decision gave power to those who work in government instead of judges who should be making such decisions. 

The 1984 Chevron decision has long been a target of conservatives.