Well, didn't your last employer give you a hard time when you disclosed?

Even though the ADA exists, it doesn't mean your new employer can't come up with a fake reason to fire you. For example, if you're manic or depressed, they may not be able to do anything about it legally, but they CAN make up some BS excuse like, "Crook32 goes to meetings 1 minute late! Unacceptable!" Then you have to prove that other people don't get in trouble for showing up late. It's your word against theirs at that point.

Just my opinion though. But some employers let you say "I do not wish to answer." That is the option I go with.