There is a whole book written on the corrosive nature of the Israeli lobby on US foreign policy by Stephen Walt and John J. Mearsheimer. A shorter working paper version of it is . "The Israel Lobby and U.S. Foreign Policy." KSG Faculty Research Working Paper Series RWP06-011, March 2006.

As for Adelson, just look up her Wikipedia... she owns Israel Hayom, Israel's largest newspaper, and is a major supporter of current Israeli government and has advocated for explosion of Palestinians from Gaza, annexation of WestBank and paid for expansion of illegal Settlements. She conditioned her financial support of Trump on moving US embassy from Tel Aviv to Jerusalem.

Covering up for war crimes and war criminals never ends well, either.