If they cared about fiscal responsibility they wouldn't have passed the 2017 tax cuts, or be trying to renew them now. IMHO taxes were fine in the 2010-2017 era and if we'd just kept that, we'd be close to a balanced budget. Instead, they cut taxes (the popular part) without cutting spending (the unpopular part) and let the debt run wild under the assumption "well the economy will grow so much it will pay for itself". Well, they were half right - it caused so much inflation that the debt is effectively 30% less because dollars are worth 30% less. They want to pile on new spending (deportation) while keeping the tax cuts that they still can't find enough spending cuts to justify. The fiscal arguments are basically a joke at this point.