It’s true, as reported by Bloomberg and the Los Angeles Times, and the partisan websites that borrowed from their reporting, that the supply of protective masks in the Strategic National Stockpile was largely depleted during the Obama administration, which then failed to restock the supply. But it’s also true that the Trump administration ignored indications that the SNS remained understocked and the country was ill-prepared for a pandemic in the years leading up to the COVID-19 outbreak.
The claim that the Obama administration “caused” or was solely responsible for the current shortage of medical equipment such as N95 protective face masks omits that wider context. We therefore rate this claim “Mixture.” -Snopes
Obama 70% responsible, Trump 30% responsible. That's being generous to Obama.