From Wiki....
Nine different nations have received invitations:
Costa Rica (
1997,
2001,
2004,
2011,
2016),
Honduras (
2001),
Japan(
1999,
2019),
Jamaica (
2015,
2016),
Mexico(
1993,
1995,
1997,
1999,
2001,
2004,
2007,
2011,
2015,
2016),
Haiti (
2016),
Panama (
2016), the
United States (
1993,
1995,
2007,
2016), and
Qatar (
2019).
The United States was invited to every tournament between 1997 and 2007 but frequently turned down the invitation due to scheduling conflicts with
Major League Soccer. However, on 30 October 2006, the
US Soccer Federation accepted the invitation to participate in the 2007 tournament, ending a 12-year absence. At the
2001 Copa América,
Canadawas an invitee, but withdrew just before the start of the tournament due to security concerns. At the
2011 Copa América,
Japanwithdrew, citing difficulties with European clubs in releasing Japanese players following the
Tōhoku earthquake and tsunami.
Spain was invited to the 2011 edition, but according to the Royal Spanish Football Federation, they declined because they did not want to interrupt the Spanish players' holidays.
At the
2015 Copa América, Japan declined the invitation as it would bring burdens to their overseas players, and
China had to withdraw due to the Asian sector of
qualification for the 2018 World Cup being held at the same time