You can always count on Rep. Matt Gaetz for a good laugh [debt ceiling]:

I think my conservative colleagues for the most part support Limit, Save, Grow, & they don’t feel like we should negotiate with our hostage.
For years, scholars and commentators have pointed out that the US government is constitutionally required to pay its debts, and the federal government collects enough revenue on an ongoing basis to finance much of its daily operation at least. But the issue of raising new debt to finance previously-budgeted spending that has not yet been reauthorized in a new budget is not as clearcut, so the mere fact of the uncertainty (given the Republican judiciary) is a threat to the US dollar's standing in the event that push comes to shove and the executive has to unilaterally raise bonds. Gaetz' comment is another reminder that mainstream Republicans have been fully invested in the concept of "rule or ruin" for many years.