Complex sentence: In the United States of America, the FCC granted "stereo preferences" to commercial broadcasters intending to use AM stereo when issuing licenses for the band, however, such stations have never been required to broadcast in stereo.
Split into simpler sentences: In the United States of America, the FCC granted "stereo preferences" to commercial broadcasters intending to use AM stereos when issuing licenses for the band. However, such stations have never been required to broadcast in stereo.