@Glenn ****
I have been watching this issue of packages between Thailand in the United States. apparently the current administration in the United States had changed some of the regulations regarding the taxation of imported packages to the United States. there was a period of transition in which there was quite a bit of confusion as the regulations lacked specific implementation rules. Thai post was refusing mail to the United States for a while but last week I went and was able to have a letter accepted which was sent to a PO box in California. this action by thaipost refutes earlier action in which they would refuse any and all mail to the US. hopefully this indicates a shift in the normalization of mail services, at least letters to US destinations from Thailand. Good luck in getting your work done!