US markets higher as the end of month and quarter approaches - Dow up +40-points or +0.18%. The broader S&P500 edged +0.12% higher to its 38th record close this year. The NASDAQ unchanged. The small capitalisation Russell 2000 index yet again notched both fresh record intra-day (1,489.35) and closing (1,488.79) highs. Both President Trump's chief economic adviser, Gary Cohn, and Treasury Secretary Steve Mnuchin spoke on the potential impact of the government's proposed tax reform proposals. Both men said the tax cuts will be paid for by the uplift in US economic growth . Cohn was quoted as saying that "we think we can drove a lot of business back to America, we can drive jobs back to America, we can make ourselves very competitive. We think we can pay for the entire tax cut through growth over the cycle." In stock specific news, Roku, which sells streaming video players, made a stellar debut on the market as it closed +67.9% above its initial public offering (IPO) price (US$14.00) in its first day of trading.