 Big difference. Home mortgage rates, 2.65% for a 30-year home mortgage the day Joe Biden became president. Today, it is not quite triple at 7.5%. That is a big jump. Gasoline, $2.38, an average regular gallon nationwide, now $3.47, almost 50% higher under Joe Biden. Yet he says it was Donald Trump's economy that was in free fall, and Joe Biden came in and saved the day.