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The sanctions, effective from 28 August 2026 , bar Santos from any direct or indirect trading access on Kalshi.
Earlier this year, fellow prediction market platform Polymarket also ended its paid relationship with Santos amid a Department of Justice investigation over whether he had placed a wager on his appearance at the same State of Union address.
A federal judge sentenced Santos to 87 months in prison last April on felony wire fraud and check fraud charges. After Santos served several months in 2025, US President Donald Trump granted the former congressman clemency, resulting in his immediate release.
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The two companies began collaborating in November 2025. As part of the deal, Polymarket provided data for a dedicated prediction market section on Yahoo Finance. The feature provided market-based probabilities of economic, political, and financial developments alongside Yahoo Finance content.
The Yahoo Finance prediction market section was taken out in April. The companies have now confirmed that the larger deal is also off, as reported by Bloomberg.
Yahoo said Polymarket is still an advertising partner and suggested the two could collaborate on other projects in the future. Polymarket has not provided any public explanation for the end of the data partnership.
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The proposal also established criteria for risk classification of products and clarifying the obligations of operators and platforms. The measure would likely grant the illegal market the opportunity to continue expanding, as it would be unaffected by the new rules. The committee approved a request for urgency for analysis by the Senate Plenary.
Authored by Senator Damares Alves and six other senators, Bill 2.470/2026 amends the Betting Law, which regulates fixed-odds betting, with measures aimed at protecting mental health, consumers, and the family economy. The bill received a favourable opinion, in the form of a substitute from Senator Alessandro Vieira.
“This is a non-partisan initiative. It stems from society’s current understanding of the extent of the damage caused by so-called betting,” the rapporteur stated.
