Detailed Instructions: Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Q: I am a US citizen who will have worked for 89 days in a Schengen country while on a 90-day tourist visa.

What exactly is my best strategy at US border control? Should I admit to working while travelling, or lie and say I was on vacation?

I fully intend to declare the income earned on my taxes for this year, but I simply want to minimize trouble at the border.

A:
Returning to US after illegally working in the Schengen area