If the government shuts down, it’s because the Trump party made it happen.
Don’t buy the analogy of increasing your credit limit (which would allow you to go further into debt when you’re maxed out). A more accurate analogy is getting a home equity loan to make your car payment (i.e., to pay for a debt you’ve already incurred). And if you fail to make your payments, then your credit rating will crash, no one will give you loans in the future, you lose your car, and then you lose your job.