Chase is giving your husband a chance to prove himself to the bank that he is credit-worthy. And you think they should give your husband more cards just because the bank is willing to start a "trial" so to speak?

Credit history takes time to establish and a slew of new applications from someone who has very little credit history before may not help his case.

He needs to put some day to day charges on his shiny new Chase card and thus establishes his payment history with the bank. After a period of time (no specified rule here), he should be able to get another Chase card easier. But he has to show Chase he is a good risk for the bank first.