FCC Public Notice: Two-way vhf/uhf radios may not be imported, advertised, or sold in the united states unless they comply with the commission’s rules.
Amateur Radio Exception. There is one exception to this certification requirement: if a device is capable of operating only on frequencies that the FCC has allocated for use by Amateur Radio Service licensees, it does not require FCC equipment authorisation, and an amateur licensee may use his or her license to operate such radios.
More information available at: https://docs.fcc.gov/public/attachments/DA-18-980A1.pdf