Sheldon Adelson has taken a medical leave of absence from Sands Corp, the parent company of Las Vegas’ Venetian Resort and Casino, to undergo cancer treatment.

Sheldon Adelson is battling cancer. (Image: LA Times)

Adelson was diagnosed with non-Hodgkin’s lymphoma last year but remained in his role as the CEO of LV Sands, the company he founded in 1988. The multibillionaire is a top Republican megadonor who donated to President Trump’s campaign in 2016 and then his reelection effort in 2020.

He’s also the top opponent of online poker legalization in the US. The casino mogul has fought long and hard to ban all forms of internet gambling at the federal level for years. His efforts have been moderately successful. Although he hasn’t achieved his goal of completely banning online poker nationwide, his lengthy fight and lobbying efforts has made it difficult for online poker legislation to progress in the US.