Why do Israeli politicians come to AIPAC?

Why do so many Israeli politicians come all the way to the US to participate in AIPAC, a lobbying conference that champions American support for Israel? Also, President Donald Trump has signed a proclamation officially recognizing the Golan Heights as Israeli territory, but is that proclamation at odds with international law? And in Japan, atomic bomb survivors receive support from the government, including free medical checkups. In Hiroshima, the aging children of atomic bomb survivors have sued the government to receive the same support as their parents.

Why do so many Israeli politicians come all the way to the US to participate in AIPAC, a lobbying conference that champions American support for Israel? Also, President Donald Trump has signed a proclamation officially recognizing the Golan Heights as Israeli territory, but is that proclamation at odds with international law? And in Japan, atomic bomb survivors receive support from the government, including free medical checkups. In Hiroshima, the aging children of atomic bomb survivors have sued the government to receive the same support as their parents.