Is Alaska in the US?

I got post card from my friend in Kansas yesterday. By the way, he's Indonesian also. It's fun to have friend to send you post card from all different state. But that's not the thing. He sent me a postcard with an International stamp. As you know, I now live in Sitka, Alaska. Which is STILL a state in the US. if you don't believe me, here, I have the map

See, Alaska is not Canada. it's definitely still USA. Okay, the end. Ciao!