House Armed Services Committee Chairman Adam Smith (D-WA) has set a $733 billion topline for total defense spending in his mark of the fiscal year 2020 defense authorization bill, blocking all Pentagon funding for President Trump’s border wall and putting the panel at odds with the Senate Armed Services Committee, which has approved $750 billion, according to a copy of the "chairman's mark" obtained by Inside Defense . Additionally, Smith’s legislation takes steps to constrain nuclear weapon spending, a move...