dershowitz says preznit has no rights that the right-wing is bound to acknowledge...,

WSJ |  As a liberal Democrat who twice campaigned for President Barack Obama , I am appalled that some Democratic members of Congress are planning to boycott the speech of Israeli Prime Minister Benjamin Netanyahu on March 3 to a joint session of Congress. At bottom, this controversy is not mainly about protocol and politics—it is about the constitutional system of checks and balances and the separation of powers. 

Under the Constitution, the executive and legislative branches share responsibility for making and implementing important foreign-policy decisions. Congress has a critical role to play in scrutinizing the decisions of the president when these decisions involve national security, relationships with allies and the threat of nuclear proliferation. 

Congress has every right to invite, even over the president’s strong objection, any world leader or international expert who can assist its members in formulating appropriate responses to the current deal being considered with Iran regarding its nuclear-weapons program. Indeed, it is the responsibility of every member of Congress to listen to Prime Minister Netanyahu, who probably knows more about this issue than any world leader, because it threatens the very existence of the nation state of the Jewish people. 

Congress has the right to disagree with the prime minister, but the idea that some members of Congress will not give him the courtesy of listening violates protocol and basic decency to a far greater extent than anything Mr. Netanyahu is accused of doing for having accepted an invitation from Congress.