I hesitated about posting on a rather complicated subject but boiled down and concentrated, I think the debt limit is unconstitutional and that Biden should ignore it in the end. My main argument concerns the powers of the Congress and the President. Under the constitution, the Congress alone has the power to levy taxes and appropriate money. The President has the constitutional duty to collect those taxes and spend those appropriated funds in the manner the Congress has directed. The President does not have authority to pick and choose what Congressionally created debts he will or will not pay. Furthermore, once the legislation levying taxes and appropriating funds is passed and signed, it's as binding on the Congress as it is on the President. There is no provision in the constitution for a backdoor after the fact veto by one house of Congress. So faced with violating a statute to fulfill his constitutional duty or violating his constitutional duty, and incidentally violating the Fourteenth Amendment, there is no doubt as to where the President's duty lies. There is no doubt that the House can and should address the deficit and the the debt but it can't rewrite its own legislation on its own.