Since American politics is mortally corrupt, one might wonder why bother to expose one prime cause of its ethical degeneracy.  If the beast is dead, what use is determining what killed it?  Well, it isn’t quite dead and we have to live with it.  If the public knew one country has done more to subvert our government than all others combined it might raise enough hell to stop it.  
 

In terms of influence, there can be no serious denial that Israel exerts by far the most powerful suasion of any foreign power on America.  Influence exerted by a foreign power’s registered lobby is legitimate per our toothless  protocol.  Israel’s is not so registered, but... details, details.  So, when Republicans invite Bibi to smarmily insult a sitting President in a joint session of Congress, that’s influence, not interference.  When, besides financing most Senators and Representatives elections, Israel takes them on cushy, free PR junkets to Tel Aviv, that’s influence, not interference.
 

Conversely, when Clintonista subversion of the Sanders campaign appears on Wikileaks and is instantly imputed to Russia and Putin--without proof and against expert technical evidence--that’s not influence, it’s Russki interference.  More absurdly, when--again, without proof--the same Dem CFOs howl that Putin Trolls bought chump change worth of dingy ads on Facebook that swung the election to Trump that’s... but you get the picture. 
 

What is obvious and has long been so--and has been emphasized by two years of fraud and insanity regarding imagined Russian collusion--is that influence is what your friends have; interference is what your enemies do.