Donald Trump, a man not renowned for the length of his attention span, likes simple formulas. Scott Bessent, his nominee to be treasury secretary, has one: “3-3-3”. He wants to cut America’s federal budget deficit to 3% of GDP, lift annual economic growth to 3% and boost the country’s oil and gas output by the equivalent of 3m barrels per day (b/d) by 2028, up from 30m in 2024.