Trump has announced a massive tax reform plan. What will be the repercussions of it, and is it passable in today's political climate?

https://www.washingtonpost.com/business/economy/trump-to-unveil-proposal-for-massive-tax-cut/2017/04/26/2097fe42-2a94-11e7-be51-b3fc6ff7faee_story.html

White House Livestream (TheHill on Facebook) : https://www.facebook.com/TheHill/videos/vb.7533944086/10154794736754087/

• What conflicts of interest does this involve?
• Can it be passed after Trump's failures on Obamacare repeal, and his defeats in federal court?
• What does a 15% business tax plan mean?
• Is this "Trumped-up trickle down economics"?
• "This will pay for itself with growth" - Is this a lie or reality?