The 2,000-year-old statue, worth $4.5m (£3.2m), is one of 10 on loan to the Franklin Institute in Philadelphia.
Last week, Michael Rohana was charged with theft and concealment of a major artwork, and later released on bail.
The Terracotta Army is one of China's most important archaeological finds.
According to court documents, Mr Rohana, 24, was attending an Ugly Sweater Party at the Franklin Institute on 21 December when he made his way into the Terracotta Warriors exhibit, which was then closed.
