I expect oil will drop, but if it doesn't and runs to $100, that will add more than 1 percentage point to CPI and PPI inflation, the highest level since the early 1980s. Last time that happened, interest rates were double digits.
Crash scenario for the market: rising interest rates in response to Fed policy. QE makes interest rates go up, not down, by lifting inflation expectations. The Fed needs lower rates to do more QE. If the market falls because of higher rates...panic.
Machiavellian populist agenda: exit from green deals by trolling Europe as hard as needed for retaliatory green tariffs that ignite populist support for leaving WTO, NATO and UN.
Knowing government and corporate lobbying, I don't see why this might not eventually consider nearly every metal "critical" turning bill into giveaway to domestic mining. I can already see a coming Deep State clash between DOE + DOD on one side and EPA.