An FBI corruption investigation into Senator Susan Collins and defense contractor donations was shut down after Trump took office, which is bad for taxpayers and good for the senator as she faces reelection in Maine.

• Collins, who chairs the Senate committee that controls military spending, was probed over campaign cash tied to federal contracts, according to ProPublica reporting.
• A defense contractor, Navitech, routed money to a super PAC backing her through a shell company, and soon after got millions in Navy funding she helped secure.
• The company's own former CEO told the FBI the work was worthless and the Navy never wanted the products.
• Agents wanted to widen the probe into bribery across Congress, naming dozens of lawmakers, lobbyists, and staffers.
• Trump gutted the FBI unit handling the case and replaced the Justice Department lawyers working with it, killing every corruption investigation it ran.

Outlook: More installments of the reporting are coming, but with no federal investigators left on the case, the only real consequence may come from Maine voters.