Well!! 

for 2p America I always think of 

Summer In The City but The Lovin’ Spoonful (or the Joe Cocker version is just as totally ace)

http://www.youtube.com/watch?v=s1_8909dNJ0

and hmmmm 2p Canada I think I would go with 

Bang Bang by Nancy Sinatra 

http://www.youtube.com/watch?v=T5Xl0Qry-hA

or like, I can’t remember the name of the song or how it goes BUT IT’S RIGHT ON THE TIP OF MY TONGUE when i remember/find it I am posting that bad boy