If the Emoluments Clause in the Constitution says that it is necessary for him to divest this interest, then he needs to divest this interest. He has to play fair. He wanted to be the president, so maybe he has to give up some things to be the president. Did he not weigh the costs before he made the campaign posters?
Trump's investments in the pipeline business threaten to undercut faith in this process — which was already frayed — by interjecting his own financial well-being into a much bigger decision. This should be about the interests of the many, rather than giving the appearance of looking at the interests of a few — including Trump
Trump should place his interest in Texas-based Energy Transfer Partners in a blind trust before he becomes President. Trump has worked hard to build a financial empire and it should not be lost simply because he is President. He can turn the interest over to his children or have it managed by others.
Trump shouldn't have his own business interests to manage while he is in the office of President. He can continue to have ownership interests in things, but he shouldn't be making the day to day decisions on his businesses. There is too much opportunity for conflict of interest. But he is still a person who should be allowed to have a side business, just like anyone else.