2) The President and his administration are LEGALLY required to follow the instructions of those bills and spend the money allocated to be spent.
3) There are pretty good legal arguments that contend that the legal restriction on the Treasury issuing bonds etc,. the "debt limit", is by definition unconstitutional since it stops the Executive Branch from fulfilling its duties under the Constitution.
Using the debt limit as a cudgel is a distraction against the actual problem - Congressional spending.
There are constitutional scholars who contend that the Treasury should ignore the debt limit and continue what they do in issuing bonds and borrowing money. Wonder if the Obama folks back in 2013 thought that would cause a constitution crisis at some point, as they chose not to do that.
You answered your own question.Nice way of deflecting and talking down to me like I'm a 3rd grader without actually answering my question, which was, what is the point of having a debt ceiling if you can just keep raising it indefinitely?