Here's what Schwab told me in a chat (as I needed to remove my margin account as I didn't want it anyway), but they said you needed to be part of their securities lending fully paid program to allow them to lend out shares, and I would get interest (if they wanted to loan them):
"that program is called our Securities Lending Fully Paid program. You would have to be invited and accept the invitation for that. "
"As well as yes industry rules and regulations state that with margin you can loan out shares. But you would have to be part of our program for that, as well as we would have to notify you as you would earn interest on loaning out the shares."
He also said, "Schwab has a bunch of shares to make a market internally as a broker dealer"
Schwab seems like a much more reputable outfit that what I'm hearing from others here. Glad y'all are taking measures to reduce the potential float available to loan short! Going to get very tight in supply real soon!!