The treaty for disabled rights was defeated last year over worries it would interfere with home-schooling.
The White House said Russia has a "clear legal basis" to return Edward Snowden to the United States.
Sen. Lindsey Graham urged Republicans to quickly confirm Samantha Power as ambassador to the United Nations.
The president described Samantha Power as the “lead White House staffer on issues related to the United Nations.”
Samantha Power apologized for the comments and resigned from Obama's campaign team after they were publicized.
The delay would allow Obama to sign the pact during the August doldrums, with Congress out of town.
Secretary of State Kerry said Monday Obama would not immediately sign the treaty but is committed to doing so shortly.
They say Obama is hesitant to sign a treaty opposed by the National Rifle Association.
The U.S. fears salaries for U.N. workers are no longer "reasonably comparable" to those of American civil servants.
Members of both parties demanded Friday that the United Nations remove Iran from leading upcoming disarmament talks.
In a letter to U.N. Secretary General Ban Ki-moon, 72 House members said Iran's “continued pursuit of a nuclear weapons capability,” “grotesque human rights record” and “role as a leading state sponsor of terrorism” should “disqualify” it from chairing the U.N. Conference on Disarmament. The next round of Geneva-based talks will take place from next Monday through June 23.
“By allowing Iran to chair this Conference, the United Nations is legitimizing a tyrannical regime committed to the proliferation of weapons of mass destruction while delegitimizing the United Nations as a force to contain nuclear weapons,” the letter says. “Indeed, a conference seeking nuclear transparency and disarmament will be led by a country operating a dangerous and covert nuclear program that threatens global nuclear instability.”