Schumer is the senate majority leader, he is the person who can bring things to a vote in the Senate. AOC should have focused her lobbying on the chamber of Congress she is a member of to bring a vote on a bill. Or even draft a bill for committee. Not just exhort the president to a course of action that was unlikely to proceed. I'm sure they did it either because they knew they didn't have the votes, or to protect Dems in vulnerable seats. Either way, they shouldn't have pushed their portion of the governments responsibility to the executive.