I agree with Bernie. After Biden signs the debt ceiling bill he should file suite against Congress asking the Supreme Court to declare the debt ceiling as an unconstitutional violation of the 14th amendment. The budget process is the time at which Congress set what spending it will or will not do, and Government cannot stop paying its bill it already decided in the budget to take on the cost.
I don’t agree with Bernie that Biden should rather than signing this bill declared the 14th amendment gives him the authority to pay the bills. The 11th hour is not the time to introduce such uncertainty, but raising the case to SCOTUS immediately after word so that there is enough time for process is the right thing to do.