TORONTO - Canada's citizenship and immigration minister says questioning Sri Lankan migrants about connections to terrorist groups has not affected the party's image among ethnic voters.

Jason Kenney says it is Canada's responsibility to question the almost 500 illegal Tamil migrants who arrived by boat in British Columbia last month.

He says law enforcement officials and governments of all political stripes must ensure migrants from any country have no ties to terrorist groups like the Tamil Tigers.

Speaking in Toronto after an unrelated event, Kenney said it would be "irresponsible" for a government to tell immigration officials not to enforce the law because it is worried about politics.

The Conservative party has tried to appeal to more ethnic voters over the last few years.