It's too bad that when he is in power he does not actually make the latter happen, because it should be scrapped entirely.
The only other country with a debt limit set in an absolute amount rather than as a percentage of GDP is Denmark, and they sensibly have set theirs far above their actual debt so it becomes just a legal formality rather than a policy tool.
The problem with it in the US is that the debt ceiling limits government borrowing to pay for debts that have already been incurred. It doesn't control the amount of spending or the deficit--that is controlled by the budget that Congress and the President approve.
If we can't just scrap it completely, then at least the budget process should be changed so every budget bill must be accompanied by a raise of the debt ceiling by enough to cover whatever extra debt that budget will be adding.
I think we're up to the killing part now.