As a result , she was blacklisted , and was once barred from entry into the United States .
Luckock attended conferences of the World Peace Council , including one in the People 's Republic of China in 1956 .
Luckock was blacklisted , and was once barred from entry into the United States .
Luckock attended conferences of the World Peace Council , including one in the People 's Republic of China in 1956 .