Van Hollen to Ryan: How about a hearing on tax rates?

Van Hollen made his opening comments after Budget Committee Chairman Paul RyanPaul RyanRyan: Graham-Cassidy 'best, last chance' to repeal ObamaCare Ryan: Americans want to see Trump talking with Dem leaders Overnight Finance: CBO to release limited analysis of ObamaCare repeal bill | DOJ investigates Equifax stock sales | House weighs tougher rules for banks dealing with North Korea MORE (R-Wis.) berated Congress for its "culture of irresponsibility."

"The failure of Washington to be honest about Medicare, Social Security and the federal budget threatens the economic security of Americans," Ryan said in his opening remarks. "For too long, policymakers have avoided the critical question of how the social insurance strategies of the 20th century can deliver on their promise in the 21st century."

The Medicare and Social Security actuaries, Rick Foster and Stephen Goss, are testifying at the hearing.