Your editorial's subheadline says that "the U.S. must keep pressing for a two-state solution." I agree, but 100% of that pressure should be on the Palestinians.
There has never been a real "peace process" because the Palestinians' goal has been the destruction of Israel. This was the Mideast Arabs' goal (including the Palestinians') in 1967 before any "occupation" and settlements, in 1948 when Israel declared independence after the partition of Palestine (when the Palestinians refused to declare theirs), and in 1921, when Arabs first started attacking Palestinian Jews.
A two-state solution can happen only when two sides want peace, and unfortunately, only one side has wanted peace in the Mideast: Israel.