By Sabrina Valle HOUSTON, June 21 (Reuters) - Chevron Chief Executive Michael Wirth on Tuesday rebutted White House officials' criticism of the oil industry over energy costs, saying bringing down fuel prices will require "a change in approach" by the government. The White House asked the CEOs of seven refiners and oil companies including Chevron to a meeting this week to discuss ways to reduce high energy prices. Biden is under pressure over record gasoline prices, and inflation is a top issue for voters ahead of the November elections with control of Congress at stake.