Congress has its best chance in years to pass sweeping permitting legislation, but a series of political and policy obstacles could derail the bipartisan Senate plan.Why it matters: Cutting hurdles for energy projects is a top priority for fossil fuels and renewables sectors, and major business groups more broadly.Here are five risks to a lame-duck deal:👱♂️ President Trump himself. The White House says it supports the bill, but Trump is mercurial, so nothing is final until it's final. His administration's willingness — or not — to loosen the screws on wind and solar projects it's restricting could also sway the lame-duck politics and complicate efforts to win Democratic support.Flashback: Co-author Sen. Sheldon Whitehouse (D-R.I.) last month cited "unresolved" questions about Trump officials returning to "regular order" for renewables, but credited their "very reasonable" proposal.🗳️ A big blue wave. Rep. Jared Huffman (D-Calif.), a senior House Democrat, has been arguing that Democrats will have more leverage next year.For now, there's little evidence that view is gaining traction among Democrats. The few definitive statements on the bill from lawmakers in both parties are supportive. But a strong Democratic showing in November could change that calculation.The big arguments against waiting: Dems won't have...