My first Hetalia comic.
Both USA and Canada followed on their promises half-way: it's legal to spank children, but not with a switch.
As of May 2009, corporal punishment by parents is allowed, with restrictions:
USA: All 50 states and the District of Columbia permit the corporal punishment of children. However, physical abuse is not allowed.
Canada: All of the 10 provinces and three territories of Canada, allow the use of "minor corrective force," but it can only be "of a transient and trifling nature." There are also minimum and maximum age limits. The use of implements is forbidden; only the open hand can be used.