Now, in a political context, a forced lie would be the sort of lie that is committed to cover up an embarrassing truth. This is the old style form of lying. A politician lies to cover up something that the opposition will otherwise be able to pounce on and take advantage of. This sort of lie can also be called a defensive lie. Nixon lied about Watergate; Reagan and George H.W. Bush lied about the Iran-Contra affair, and so forth.
In contrast, an unforced lie is a lie that no one is forcing the politician to make. A false attack on an opponent would be an unforced lie. The perpetrator is not trying to cover something up, but instead using a lie as a weapon. Propaganda often takes the form of unforced lies.
The forced/unforced terminology can be applied to Trump's troubled nomination of Pete Hegseth for Secretary of Defense. Among allegations of a drinking problem, sexual impropriety, and financial misconduct, the most provocative was an email written by Hegseth's mother to her son while he was in the midst of a contentious divorce. In the email, she told him "I have no respect for any man that belittles, lies, cheats, sleeps around and uses women for his own power and ego. You are that man ..." That email can be viewed as an unforced truth. Hegseth's mother didn't need to forward the email to Hegseth's wife, who presumably shared it with others through whom it ultimately was made public. The mother's recent disavowal of the email (“It is not true. It has never been true.”) can be seen as a forced lie, that is, a predictable defensive attempt, given social and political pressures, to contradict the unforced truth she herself had revealed.
An internet search uncovered precious little, but there's an anonymous post on reddit that also divides lies up into forced and unforced. Here it's an atheist's interpretation of God as a Big Lie that spawns forced lies to deal with the inconsistencies between the Big Lie and reality.
"Even if you have reasonable critical faculties in other areas of life, people who have bought into the big lie construct very complex additional lies as part of the apologetics process. These additional lies are forced lies in the sense that they need to be constructed to paper over the (increasingly many) inconsistencies between the big lie and reality. This is somewhat understandable, if one is empathetic enough to accept the power of buying into an ideological big lie in the first place."Later in the post, the author introduces the concept of a debt to the truth, the idea being that, just as governments can accumulate debt, people can accumulate a debt that expands with each new lie they tell.
"Every lie we tell incurs a debt to the truth. Sooner or later that debt is paid."
How satisfying it would be if people who accumulated a debt to the truth ultimately got their comeuppance. It is an appealing notion that speaks to faith in a moral universe, even among those who question the existence of God. What I see, however, as 2024 comes to a close, is a world or at least a nation where lies, now primarily of the unforced variety, are ascendant, tolerated, often rewarded.