But through legal loopholes and stuff

The “stuff” part was violent military invasion payed by the US. Zionism has been a thing since the XIX century and illegal Jewish settlements have been occurring from even way before WW1. To the point that some Zionist groups even staged refugee ships and terrorist attacks to gather diplomatic support and fight the British and Palestinians for decades (including bombing civilian houses, razing villages and murdering children). When the US gave them financial back up at the end of the first Arab-Israeli war (which they only wanted out of imperialism to use Israel as a war dog against other Arab nations), they used it to turn their paramilitary groups into an official army and invaded all of the West Bank (and half of Egypt). The whole thing is fucked up beyond belief.