conference - Advice wanted concerning students who have had run ins with the law.

I am a first year grad student with an expunged felony in the state of Arkansas. I am looking for advice on if and how I should communicate this with my adviser. The felony is due to a drug crime and took place ~decade ago. I ask this because through out my academic career I may need to go to conferences in other countries and this may affect my ability to get through customs and enter those countries hosting the conference.

I am looking for other students who were in the same boat, professors who have dealt with similar situations, and in general opinions from advisers on how they would like to be approached in situations such as this.

Thanks for the communities knowledge in advance.