Biden wants to let people buy blended gasoline to lower prices. There’s just one big problem

It's one of the main drivers of U.S. inflation reaching a 40-year high, and among the factors most likely to hurt Democrats’ electoral chances in the November midterms.

It’s high gasoline prices, and President Joe Biden is starting to get creative in trying to lower them. 

U.S. gas prices currently average $4.27 per gallon, a sharp decline after a mid-March high that caused drivers to put in fewer miles on the road, sending demand for gas plummeting. But the national average is still well over $1 more per gallon relative to a year ago, and the current...