If I buy a banana for 20 cents does that get added?
If the US exports $1000 worth of tires does that get added?
If someone from Mexico buys a tee-shirt from a US retailer online for $10 does that get added? IF they paid $6 to FedEx (American company) does that get added?
If I paid Ford $45 an hour for 2 hours to fix my car does that get added?
Read more: How does GDP get measured?