Joe Biden is sworn in as the 46th president of the United States by Chief Justice John Roberts as Jill Biden holds the Bible on Wednesday during the 59th Presidential Inauguration at the U.S. Capitol in Washington. Credit: Andrew Harnik / AP

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Gordon L. Weil formerly wrote for the Washington Post and other newspapers, served on the U.S. Senate and EU staffs, headed Maine state agencies and was a Harpswell selectman.

The president-elect had planned to take a public, victory train trip into Washington for his inauguration. Instead, his protectors had him travel securely and unseen.

Sound like Joe Biden last week? It was, but it was exactly the same scenario for Abraham Lincoln in 1861.

The parallel goes even further. Both times, massive military protection guarded the new president’s inauguration. Both times, the president took office in the wake of civil strife — the Capitol insurrection in 2021 and the secession of South Carolina and six other states 160 years earlier.

Both presidents assumed leadership of a country badly divided. About half of the Republicans believe Democrat Biden had stolen his election from Donald Trump. Even before Lincoln, the first Republican president and an opponent of slavery, took office, four more states moved toward secession from the U.S.

Biden followed Trump and Lincoln succeeded James Buchanan. Trump and Buchanan were divisive one-termers who may end up with history’s lowest presidential ratings.

Both new presidents sought national unity. In his First Inaugural Address, Lincoln stressed that he did not seek to end slavery in states where it existed. He would later agree to a proposed constitutional amendment to guarantee slavery’s survival. He drew the line only against a state quitting the Union.

Despite his attempts to reassure the Southern states, he failed to prevent secession and the Civil War. Attempting to appease the opposition would not work. In his Second Inaugural Address, Lincoln recalled his failed efforts, ruefully concluding, “and the war came.” Lincoln’s attempt at appeasement is a lesson for Biden.

Biden can also learn from more recent experience. Barack Obama made one-sided concessions to the Republicans. Instead of naming a strong liberal, he nominated moderate Merrick Garland to the Supreme Court. The GOP would not even give him a hearing. Similarly, Bill Clinton made concessions, but could not avoid impeachment.

With only a slim Democratic majority in Congress and some Republicans seeming to regret the insurrection inspired by Trump, this year may provide the proper conditions for compromise. While deals with the GOP might not fulfill the Democrats’ agenda, they could provide the basis for restoring unity.

Biden has said he will try for unity and to work with the GOP. But it’s not really up to him. Will Republicans in Congress recover their traditional responsible conservatism and negotiate deals or will they remain dominated by Trumpers for whom politics is combat?

Unity would only come if both sides were willing to adopt policies in which their disparate views are taken into account. The Democrats control the national government, so they have a right to set the agenda. If there are Republicans willing to negotiate in good faith, the result would blend some of their concerns into the new laws.

First-term presidents are often considered to have the greatest power during their first year in office. Their mandate is fresh, and they may enjoy their greatest congressional support. With that in mind and seeking to reverse many Trump policies, Biden plans to move forcefully and quickly. If the GOP is willing to work with him, it should react immediately.

But some Republicans insist that Trump’s impeachment trial harms hopes for unity. They ignore the fact that continued GOP backing of Trump’s unproven claim that the election was stolen has made unity impossible. The passionate denial of Biden’s win undermines efforts for compromise.

If the GOP is ready to move away from take-it-or-leave-it politics, Biden could risk disappointing the most liberal Democrats and try to achieve his objectives by accepting some limits favored by Republicans.

As the oldest president, he well knows the value of using the time you have, not waiting. That works against appeasement, which would likely be seen as a sign of weakness. But it could allow legislative deals on health care, the environment and the economy. Of course, strong action on COVID-19 is essential.

With more congressional experience than any president in 40 years, Biden appears to understand that the best way to get the other side to negotiate is by the aggressive pursuit of his program. That could gain the attention of Republicans better than would appeasement.

When he could not get what he wanted from Congress or simply wanted to assert his power, Trump often took action on his own. He stretched the use of executive orders beyond traditional limits, often taking advantage of the loopholes left in laws by a Congress more focused on fundraising than lawmaking.

Biden will now use the precedent set by Trump to undo Trump. If Congress wants to reassert its lawmaking powers, it needs to get its act together.

That requires cooperation between practical Democrats and reformed Republicans. It may not be unity, but it’s the essential first step.