Well...

not in a Canadian church, anyway.

Does the American flag belong in church?

But seriously, I don't think that it is correct for any nation's flag to be prominent in a church. The reason it's such an issue in the U.S. is that they believe that their nation is handpicked by God to be special somehow - even if China does own their national debt and everything else is owned by corporate America. The flag helps maintain the delusion...