Why One "Pinnochio?"

[George K]

“Dylann Roof murdered nine people. He’s on federal death row. He’ll be getting a $1,400 stimulus check as part of the Democrats’ ‘COVID relief’ bill.”
— Sen. Tom Cotton (R-Ark.), in a tweet, March 6
“With this bill, they’re going to people in prison, they’re going to people who are illegal immigrants.”
— Sen. John Barrasso (R-Wyo.), in an interview on NBC’s “Meet the Press,” March 7

Update, Jan. 6, 2022: We received an email from Cotton’s press secretary, James Arnold, who noted that Tsarnaev did indeed receive a stimulus check. This news emerged in a filing made by the Justice Department seeking to seize the money for criminal restitution he still owes.
“You portrayed Senator Cotton’s amendment as pure political theater—'not serious legislation'—warning of an outcome that, according to your article, was very unlikely to happen," Arnold wrote. “Now that it has in fact happened, we’re asking that you update your story to include that Senator Cotton’s concerns did come true and that his amendment would have prevented it.” He added that “we also disagree with your claims that Senator Cotton’s efforts were solely political, designed only for campaign ads etc., instead of based on legitimate policy disagreements." He noted, for instance, the use of the phrase “scaremongering.”
We take such requests seriously and are always willing to review a fact check in light of new information.
Cotton primarily received the Two-Pinocchio rating because his comments lacked context. He suggested this problem was the result of something Democrats did, when he had previously voted for legislation with the same language that allowed for checks to be issued to prisoners. He also made it clear that he intended weaponize this debate for campaign ads.
Still, Cotton’s predictive powers should be acknowledged. He said the Boston bomber would get a stimulus check — and Tsarnaev did. Now, if the government is successful, this money will go to victims. So Tsarnaev still will not keep it. But in retrospect, the use of the phrase of “scaremongering” was inappropriate. Cotton had raised a legitimate issue of concern, even if he framed it in a political way. The term “hyped up” in the headline went too far as well.
Thus, we will reduce the rating on this claim to One Pinocchio — our version of “mostly true.” His statement still lacks some context but he was certainly correct that Tsarnaev would receive a stimulus check.
One Pinocchio

What the hell does that mean: "Mostly True?"

It's a fact. He was right. Suck it up Mr. Kessler and admit your error and stop cowering in darkness behind what you consider ambiguous facts.