(Reuters) – Wall Street’s main indexes opened at record highs on Monday (NASDAQ:) as optimism on proposed tax cuts and expectations of an easier regulatory environment after Donald Trump won the U.S. presidency continued to lift stocks. The rose 254.75 points, or 0.58%, at the open to 44,243.74. The rose 13.3 points, or 0.22%, at the open to 6008.86​, while the rose 68.6 points, or 0.36%, to 19355.338 at the