Conversation so far:
What kind of controversy surrounded Chong regarding his legal issue?
There was a controversy about the disparity in sentences between Chong's and those of other defendants and the DEA tactics used in the investigation.
What was the DEA's investigation regarding Tommy Chong?
Federal agents investigated Nice Dreams, the headshop owned by Tommy and Prince Chong.
What did the DEA do while inside the shop Nice Dreams?
During its investigation of Nice Dreams, federal agents posed as head-shop owners from Beaver County in western Pennsylvania.
What did Paris Chong do in connection with Nice Dreams?
Paris Chong had started Nice Dreams in 1999.
Was Paris Chong arrested?
Paris Chong was never charged with his crimes in relation to the investigation as part of a plea bargain.

Question: Did the shop close because of this?
Self-contained rewrite: Did the shop Nice Dreams close because of the investigation?