Then you must be less than 30 years old, the budget was balanced under Bill Clinton, he was POTUS from 1992 to 2000.
Since then both parties have destroyed the budget and put it into a multi-trillion dollar structural deficit.
After the event was over I had a chance to meet the guy, and I diplomatically told him he was full of sh!t ... because the "surplus" only existing as a result of the biggest accounting gimmick of all: using excess FICA (Social Security) tax revenues to offset revenue shortfalls in the Federal budget. In his own pathetic, simpering way he admitted that I knew what I was talking about.