What documents are needed @ port of entry to travel on a B1/B2 Visa; with dual purpose visit. I've a one day business meeting; also I'd love to travel US for a couple of weeks. I have M Entry B1/B2 stamped on my expired PP (Visa valid for few more years); New passport has nothing. What do I need to show/say at Port of entry. Help appreciated. Thanks. Indian Citizen; Have travelled to US long ago on Business for training. Long training schedule did convincing last time. Don't have that luxury now. Thanks again,

What documents are needed a port of entry to travel on a B1/B2 visa with dual purpose visit? I have one-day business meeting and I'd like to travel in the US for a couple of weeks afterwards. 

I have M Entry B1/B2 stamped on my expired passport; the visa is valid for a few more years. My new passport does not have a visa. 

What do I need to show/say at the port of entry?

I am an Indian citizen and travelled to the US a long time ago on business for training. Last time, the length of the training schedule was convincing, but I don't have of that luxury for this trip.