As I'm sure you've read, bassets can be very difficult to housetrain. And consistency is key to housetraining. I'm single, and perhaps this is why: I don't understand why your husband can't take the dog out on schedule, since he's around more. Barring that, you could try crating the dog during the times he's most likely to pee in the house. You could even put the crate in the bedroom, for those times when you leave but your husband isn't up yet, so the pup won't feel so lonely.
P.S. This assumes there is nothing physically wrong with the dog.
P.S. This assumes there is nothing physically wrong with the dog.