The national debt has exceeded $21 trillion for the first time, according to the U.S. government. It had hit $20 trillion in September. President Donald Trump signed a debt-limit suspension in February, allowing unlimited borrowing until March 1, 2019. Economists are expecting the U.S. to run wider budget deficits due to the tax cut Trump signed into law in December. The government had a monthly deficit of $215 billion in February, up 12% from the same month last year due to lower revenue and higher spending.