by Matthew Hay Brown Congress left Washington last week for the Fourth of July break, but gasoline prices take no holiday - and neither does the campaign by congressional Republican leaders to push for more domestic drilling. House Republican Leader John A. Boehner is highlighting today's CNN/Opinion Research poll finding that 73 percent of Americans in favor of expanded offshore drilling for oil and natural gas in protected U.S. waters. The survey of 1,000 Americans from June 26 to 29 is... ...