The US stock market closed higher on Monday as it was hoped that the US government would approve aid to the economy.U.S. bond yields and oil prices rose after President Donald Trump and US Congressional Speaker Nancy Pelosi pointed out over the weekend the importance of additional support to the economy.In addition, Trump said on Twitter that he would be released from the hospital on Monday.The S&P 500 index rose 1.8 percent to 3,408.60 points.The Dow Jones industrial index gained 1.7 percent to close at 28,148.64 points and the technology Nasdaq improved 2.3 percent to 11,332.49 points.Shares of smaller companies outperformed even more thanks to increased optimism, and the Russell 2000 small business index rose 2.8 percent to 1,581.96 points.Asian stock markets have also strengthened.Tokyo's main Nikkei 225 index rose 0.5 percent to 23,433.73 points on Tuesday.The Hong Kong Hang Seng index rose 0.8 percent and the South Korean Kospi 0.3 percent.The Chinese stock market did not trade for the holidays.