Remember, this happened with them also knowing that Iran was actively and openly trying to assassinate the American president who is the Democrat adversary.
Link: https://www.foxnews.com/politics/biden-admin-extends-10b-iran-sanctions-waiver-2-days-after-trump-election-win
...from Baron's link...
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"We remain committed to reducing Iran's malign influence in the region. Our viewpoint is that a stable, sovereign and secure Iraq is critical to these efforts," he added, pointing out that this sanctions waiver began in 2018 during the first Trump administration.
Congress has passed several sanctions targeting Iran that give the president authority to temporarily suspend, or "waive" the sanctions if the president determines doing so is in the interests of U.S. national security.
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Your own linked article isn't that long, Baron...what's the problem?...