very slim odds you'll be searched but they won't care if you have a drone with you. You just can't use it if it's over 250 grams and can't use it in any of the Natl Parks.
If you're planning to travel internationally and bring valuable items with you, it's a good idea to register them with U.S. Customs before you leave the United States. This registration serves as proof that you owned the items before your trip, making it easier to clear customs upon your return and avoid potential duties and taxes.