I don't know. Frankly, I think Schumer's opposition to the deal is pure political opportunism and I wouldn't trust him on issues of national security farther than I could throw him.
Schumer doesn't give a rip about national security, and he belongs to one state that got attacked on 9/11. His only interest is himself and the unions that support him. He didn't even support the 45-day review, because frankly, I believe he would have been made a fool, just like the people who sided with him on the Dubai deal. Facts are stubborn things to liberals like Schumer and neo-protectionists here on FR.