“Congress is legally required to consider a budget resolution every year, but there’s no penalty for not doing it, and no one has any standing to sue,” says Stan Collender, a longtime congressional budget analyst with Qorvis Communications in Washington.
http://www.csmonitor.com/USA/Politi...-strange-politics-behind-a-budgetless-America
Legally required and constitutionally required are different things. And legally required to consider something is different from legally required to pass something.