Neb. Rev. Stat. § 16-237

A city of the first class by ordinance may regulate, license, or prohibit the sale of domestic animals or of goods, wares, and merchandise at public auction on the streets, alleys, highways, or any public grounds within the city; and regulate or license the auctioneering of goods, wares, domestic animals, and merchandise. If the applicant is an individual, an application for a license shall include the applicant's social security number.