<span>First US visit by a sitting president to China since it becoming a Communist country.
This represented a thawing in Cold War thinking that created two separate spheres in the world. Nixon began US efforts to improve relations between the US and China. He also believed it was time for the US to begin policies reducing nuclear weapons development and create trade agreements with countries cut off by the Cold War. </span>
This is known as a "pocket veto," since it would be impossible for the President to return the bill, due to the fact the Congress is not in session to accept it. Otherwise the bill would be returned.
3, it is not a length of time, it is a group