Temporary resident visa requirement lifted for all citizens of Poland or Lithuania, regardless of travel document held.
Effective August 1, 2015 Citizenship and Immigration Canada (CIC) now exempts all citizens of Poland and Lithuania from the temporary resident visa (TRV) requirement, regardless of travel document held. See details below.
http://www.cic.gc.ca/english/resources/tools/updates/2015/2015-08-01a.asp