President Donald Trump’s signature tax and spending legislation is providing short-term clarity for Wall Street but fueling concerns about the long-term health of the US economy, investors say.

Senate Republicans are advancing a broad-based tax package to extend the 2017 Trump-era tax cuts by deploying a controversial “current policy” accounting gimmick that waives the $3.8 trillion price ...

All told, the S&P 500 rose 8.81 points to 6,268.56. The Dow Jones Industrial Average added 88.14 to 44,459.65, and the Nasdaq ...