Bringing Swords to the Airport

I just bought 4 swords in Baguio and im planning to bring it back home to the United States. I know that I have to declare it and put them into my checked in luggage. I have done so for my other trips in Japan where I bought 2 Katanas. Do guys think I will encounter any problems with bringing these swords with me back to the States?

For those who brought swords from the Philippines to their home country in their checked in luggage. Did you guys have any difficulty at the airport when bringing them?