I am from Brazil and I exchanged some USD on 1998 and now I am going on a trip on the US and i want to use those old dollars to just to buy things in stores. There's any problem? Thanks
Yes, they're still valid, and should never expire. You may find that some places look suspiciously on the old designs for larger bills, but you can always trade them in at a bank at no cost.
I need access to the Federal Real Property Profile Management System [FRPP MS] for the purposes of integrating federal real estate that the gov't has, any help?