Wall Street closed lower on Tuesday after evidence of a cooling economy exacerbated worries that the Federal Reserve’s campaign to rein in decades-high inflation may cause a deep downturn. All three major indexes fell as data showed U.S. job openings in February dropped to the lowest level in nearly two years, suggesting that the labor market was cooling, while factory orders fell for a second straight month. Data on Monday had also pointed to weakening U.S. manufacturing activity. “The…