Hensarling is a constitutional conservative and doesn't believe that the government should be involved in housing finance. He's not wrong, but the government is involved and any changes would be way too disruptive. He's also not running for re-election so can say what he wants with no political ramifications
both him and Corker are not seeking reelection. Not sure why that are working so hard on this right before they leave but who knows. they are enemies of the GSE's