Edit: from the same article - This what he seems to be referencing: In 2021, the Biden administration reversed Trump's rule that previously increased the flow

Edit: from the same article - This what he seems to be referencing: In 2021, the Biden administration reversed Trump's rule that previously increased the flow of water in showerheads. The Washington Post reported at the time, "Trump's shower head rule was part of a broader effort within the administration to relax energy efficiency standards and regulations for an array of household appliances, including dishwashers, washing machines and clothes dryers."