Washington (AFP) – US consumer prices cooled in October but remained at decades-high levels, according to government data released Thursday, keeping the pressure on President Joe Biden as his Democratic party struggles to retain control of Congress. The closely-watched report showed more evidence of rising costs, including a rebound in gasoline prices, in a year when surging inflation topped voter concerns, and as Americans headed to the polls in this week’s midterm elections. But there were positive signs in the consumer price index (CPI), which showed annual inflation slowed to 7.7 percent i…