In removal proceedings under the Immigration and Nationality Act, the term "Order to Show Cause" (OTSC) was replaced by "Notice to Appear" (NTA) as of April 1997.
Prior to April 1997, in immigration removal proceedings governed by the Immigration and Nationality Act, the term "Order to Show Cause" (OTSC) was used.  However, this practice was replaced with "Notice to Appear" (NTA).