The American Israel Public Affairs Committee, arguably the most influential pro-Israel lobbying group in the country, has long treated support for the Jewish state as an issue that rises above partisan politics.

As a single-issue organization, AIPAC maintains it is party-agnostic, especially when it comes to political spending. But in recent years, AIPAC’s relatively new political action committees have poured unprecedented sums into races seeming, to some outside observers, to support Israel-friendly Republican candidates primarily while targeting Democrats critical of Israel.