Does Impeachment Nullify President Trump's First Term?
A Failed Impeachment Result
It is likely, very likely, that the impeachment of President Trump ends with an acquittal due to the Republican senate conducting a sham or fake trial. If if the trial is fair to both sides, it may end in acquittal, actually, likely to end the same way. Like it or not, that is what the future holds.
President Trump likes to joke about how he would like to continue being POTUS for three terms (12 yrs.). There is a lot of disinformation about how this might occur coming from the far (and not so far) right wing that supports anything Trump does.
Acquittal
The claim is that if Trump is only acquitted in the impeachment trial and not removed from office nullifies Trump's first term because it limited and distracted from his duties disabling him from what could be accomplished. President Clinton in 1999 was acquitted of obstruction charges and still was limited to two terms.
The U.S. Constitution clearly states that no person can run for president more than two terms (8 yrs). It does not saying anything about how an acquittal in an impeachment nullifies a president's first term or any term. What Trump will do if acquitted is to run again in 2020, and if he wins, this second term will be his last forever. If the Senate does impeach Trump but does not disqualify him from holding the office, Trump could run for a second term. Even if Trump was impeached and disqualified and removed as president, he could run for a Senate or other governmental position.
Again, whatever the result is, Trump cannot be POTUS more than two terms. Nothing nullifies his first term or the 2016 election. Trump continues to lie about all this and so do his supporters. Trump alludes to being president forever or being president for more than three consecutive terms. This could never happen unless the U.S. Constitution was amended to allow it, which is highly unlikely. Trump could run for president again, though, if he loses in 2020, and runs in 2024.
So, like so many lies Trump spits out of his mouth, it is just meat for his base with no factual truth.