Again, wrong end of the pipeline. It's just more busywork to do. The staff is already responsible for what is spent on the card and to match it to approved spending and their budget.
Just building in more red tape and expense to a system.
Saying we shouldn't improve spending oversight because the real problem is at the budgeting level is like saying we shouldn't put security cameras in a store because the owner should have hired more trustworthy employees. Sure, hiring matters, but that doesn't mean we shouldn't also keep an eye on the cash register. If Congress allocates funds irresponsibly, that’s a separate issue—but ensuring that spending is properly tracked and justified helps prevent waste and misuse at the point where it actually happens.