 Gorsuch wrote that the Colorado renewable energy law "isn't a price-control statute, it doesn't link prices paid in Colorado with those paid out of state, and it does not discriminate against out-of-staters".In "Riddle v. Hickenlooper" (2014), Gorsuch joined a unanimous panel of the Tenth Circuit in finding that it was unconstitutional for a Colorado law to set the limit on donations for write-in candidates at half the amount for major party candidates.Gorsuch added a concurrence where he noted that although the standard of review of campaign finance in the United States is unclear, the Colorado law would fail even under intermediate scrutiny.