1，CBP form 6059B Customs Declaration question 15:
Visitors - the total value of all articles that will remain in the U.S., including commercial merchandise is:
我父母是移民签证进入美国，他们会带一些自己的物品过来，因为是移民，所以他们和物品都会留在美国，
这些物品大概$500美元，需要填写$500美元吗？
2，K1 visa 进入美国，Do I need to enroll and complete an EVUS (Electronic Visa Update System)?
Thank you very much.