On February 27, the U.S. Supreme Court refused to hear Greene v Bartlett, 11-868, which challenged the number of signatures required for an independent candidate for U.S. House in North Carolina. The requirement is 4% of the number of registered voters. The law also requires a filing fee of 2% of the annual salary of the office. The requirement is generally between 16,000 and 20,000 signatures.
That law is so strict, no independent candidate for U.S. House has ever appeared on a government-printed ballot in North Carolina, and government-printed ballots have existed in that state since 1901. However, in 2010, the Service Employees International Union successfully completed the petition for a candidate who then refused to run, so the state seized on this incident as evidence that the requirement is not impossible to fulfill. No one has ever revealed how much that petition cost, but it was probably at least $50,000.
The U.S. Supreme Court said in 1974 in Storer v Brown, and again in 1977 in Mandel v Bradley, that ballot access laws that are so difficult, they are seldom used are probably too difficult and should be struck down. No one knows why the Court doesn’t take ballot cases in which the lower court disregards these precedents.