because under the Obama administration Israel receives more aid & military hardware than it ever has in history? to me, billions of dollars in financial aid sounds like "blessings" rather than "curses"
or because Obama is pushing the exact same parameters for an Israeli/Palestinian peace agreement that both Bill Clinton and George W. Bush were for?
every US president since 1967 has urged Israel not to build settlements in the part of the land that they regained in the 6-day war. not until Reagan did a US president deny that Israel's activities in Palestinian-occupied territories were "illegal" according to international law. while since 1981, every US president has stopped before calling Israel's settlement-building "against international law" no US president has spoken in favor of it.
every international attempt at a brokering an Israel/Palestine peace agreement has included stopping settlements from being built. Bush's plan was to destroy the existing ones.
what makes Obama different is the amount of time and money his political opponents put into propagandizing the population of America - a lot of which is particularly aimed at conservative Christians, whom the GOP treats as a 'guaranteed voting bloc.'
take what you hear with a grain of salt & look up the actual facts.