Sales tax revenues have recovered. Fiscal year 2019, which started in July, should be a good year thanks to Federal disaster aid. The real question though is what happens when Federal aid starts to fall.
The U.S. currently runs a surplus on investment income of about 1 percent of GDP, as the income on U.S. equity investment abroad (inflated by tax arbitrage) exceeds the interest the U.S. pays on its external debt. That surplus could shrink significantly as interest rates rise.