Before 2021, AIPAC spent money on lobbying members of Congress, but did not spend money in US elections to control which members of Congress got elected.
After the GOP insurrection in Jan 2021, & with an influx of GOP cash, AIPAC began to exercise control in Democratic primaries, using that GOP cash not just to engineer a more conservative Democratic party, but to reward over 100 GOP insurrectionist MOCs.