Credit-card interest rates average around 23%, and people with lower credit scores can pay rates of up to 36%. - Nam Y. Huh/AP In a move aimed at easing economic pressures on American households, President Trump is calling for a temporary 10% cap on credit-card interest rates. Trump didn’t offer any details on how the one-year cap would be enacted but said he wanted it to begin on Jan. 20. Most Read from The Wall Street Journal “Please be informed that we will no longer let the American Public be ‘rip ...