For those concerned about President Donald Trump's authoritarian behavior and personal stability, there's a lot of hope being placed in the U.S. system of checks and balances. They only work, people are beginning to realize, if someone acts to do so. With partisan tribalism at perhaps an all-time high and Trump's party in control of all branches of government and chambers of Congress, that actor isn't quite so clear.
Aside from the federal courts, the most obvious countervailing force in time of constitutional curses would be "country-before-party" Republican members of the Senate and -- statistically speaking -- the most likely member to challenge their caucus would be Maine's own Susan Collins.
I am an award-winning journalist and author of American Nations, American Character, Ocean's End, The Lobster Coast, and The Republic of Pirates. I'm a staffer at the Portland Press Herald, where I won a 2012 George Polk Award for my investigative reporting and was named a 2016 Pulitzer Prize finalist.