If there’s one thing politicians know, it’s that if you give a little, you get some in return.  In anticipation of a tough midterm battle, the Republicans got a big boost from megadonor Sheldon Adelson, who announced today that he would be giving $30 million to the GOP-associated Congressional Leadership Fund to help stop the Democrats from taking control of Congress.

Politico reports that Paul Ryan flew out to Las Vegas last week and sealed the multimillion dollar deal at Adelson’s luxurious Venetian Hotel.  This donation is three times the amount that Adelson gave to the group during the last election cycle, and just $5 million short of the amount he gave to a Trump super PAC in 2016.

So what does Adelson get out of this arrangement?  For one thing, the new GOP tax reform has been a boon for Adelson and his company:

And while the UK, France, and Germany are remiss about Trump’s decision to pull out of the Iran deal, Adelson is likely satisfied about this news.  Adelson is part of the Board of Directors for the Republican Jewish Coalition, which lobbied hard against the Iran nuclear deal as it was being negotiated by the Obama administration.  According to Washington Post reporter Ashley Parker, Adelson was scheduled to meet Trump for lunch yesterday, just one day after he announced America’s withdrawal from the Iran deal.