Good news: In two years, we’ll have a new president. Bad news: If we make it that long.

My “good” prediction is based on the Law of the Pendulum. Enough Americans, including most independent voters, will be so ready to shed Donald Trump and his little shop of horrors that the 2018 midterm elections are all but certain to be a landslide — no, make that a mudslide — sweep of the House and Senate. If Republicans took both houses in a groundswell of the people’s rejection of Obamacare, Democrats will take them back in a tsunami of protest.

Once ensconced, it would take a Democratic majority approximately 30 seconds to begin impeachment proceedings selecting from an accumulating pile of lies, overreach and just plain sloppiness. That is, assuming Trump hasn’t already been shown the exit.

Or that he hasn’t declared martial law (all those anarchists, you know) and effectively silenced dissent. We’re already well on our way to the latter via Trump’s incessant attacks on the media — “among the most dishonest human beings on Earth” — and press secretary Sean Spicer’s rabid-chihuahua, daily press briefings. (Note to Sean: Whatever he’s promised you, it’s not worth becoming Melissa McCarthy’s punching bag. But really, don’t stop.)

With luck, and Cabinet-level courage that is not much in evidence, there’s a chance we won’t have to wait two long years, during which, let’s face it, anything could happen. In anticipation of circumstances warranting a speedier presidential replacement, wiser minds added Section 4 to the 25th Amendment, which removes the president if a majority of the Cabinet and the vice president think it necessary, i.e., if the president is injured or falls too ill to serve. Or, by extension, by being so incompetent — or not-quite-right — that he or she poses a threat to the nation and must be removed immediately and replaced by the vice president.

(Jenny Starrs/The Washington Post)

Aren’t we there, yet?

Thus far, Trump and his henchmen have conducted a full frontal assault on civil liberties, open government and religious freedom, as well as instigating or condoning a cascade of ethics violations ranging from the serious (business conflicts of interest) to the absurd (attacking a department store for dropping his daughter’s fashion line). And, no, it’s not just a father defending his daughter. It’s the president of the United States bullying a particular business and, more generally, making a public case against free enterprise.

To an objective observer, it would seem impossible to defend the perilous absurdities emanating from the White House and from at least one executive agency, the Agriculture Department, which recently scrubbed animal abuse reports from its website, leaving puppies, kittens, horses and others to fend for themselves.

In a hopeful note, a few Republicans are speaking out, but the list is short.

Rep. Jason Chaffetz recently got a taste of what’s ahead for Republican incumbents. Facing an unruly crowd at a town hall meeting in Utah, the House Oversight Committee chairman was booed nearly every time he mentioned Trump. Even if many in the crowd were members of opposition groups, the evening provided a glimpse of the next two years. From 2010’s tea party to 2018’s resistance, the pendulum barely had time to pause before beginning its leftward trek.

While we wait for it to someday find the nation’s center, where so many wait impatiently, it seems clear that the president, who swore an oath to defend the U.S. Constitution, has never read it. Nor, apparently, has he ever even watched a Hollywood rendering of the presidency. A single episode of “The West Wing” would have taught Trump more about his new job than he seems to know — or care.

Far more compelling than keeping his promise to act presidential is keeping campaign promises against reason, signing poorly conceived executive orders, bashing the judicial and legislative branches, and tweeting his spleen to a wondering and worrying world.

1 of 83 Full Screen Autoplay Close Skip Ad × See what President Trump has been doing since taking office View Photos The new president is expected to make his mark on an aggressive legislative agenda. Caption The beginning of the president’s term has featured controversial executive orders and frequent conflicts with the media. March 17, 2017 President Donald Trump, first lady Melania Trump and their son, Barron, walk to Marine One at the White House en route to Mar-a-Lago in Palm Beach, Fla. Jabin Botsford/The Washington Post Buy Photo Wait 1 second to continue.

Trump’s childish and petulant manner, meanwhile, further reinforces long-held concerns that this man can’t be trusted to lead a dog-and-pony act, much less the nation. Most worrisome is how long Trump can tolerate the protests, criticisms, humiliations, rebuttals and defeats — and what price he’ll try to exact from those who refused to look away.

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