America and Canada always take vacations together, as it is a tradition for them. Every summer, they travel across both of their countries in a big road trip. They always celebrate their birthdays in the respective country.

"Which reminds me... I need to call Canada..."
                 《☆》《☆》《☆》

Again, Canada and America are amazing brothers, and I support this headcanon. I wish I could go with them xD