U.S. President Donald Trump’s planned economic agenda has fanned the flames forWall Street’s record-setting run, but some investors worry that his first major address to Congress next week risks dousing it if his plans look slow to execute or are overly vague. The benchmark S&P 500 has surged 10 percent since Trump’s Nov. 8 election, with optimism running high over the Republican administration’s domestic proposals, including plans to reform taxes paid by businesses.