They tried, but given how much Nneka has already played for the USA senior national team, there was basically never any possibility of that happening. Chiney was approved so I guess that is still possible.The Nneka train left the station a few years ago thanks to USA Basketball's 'decision' making. I thought she and Chiney indicated they'd play for Nigeria.
Nigeria's national team is a mess as AfroBasket starts on Friday. The government had major issues with the federation and withdrew them from all senior national team competition before reinstating the teams. That meant new coaches friendly with the power structure. Rather than reach out to the women who had made them three-time defending champions to get them back on board, they announced tryouts a few weeks ago so they are going to have to defend their crown with some less experienced players.
Back to the United States, I would assume that they try to have some kind of fall camp, especially since more and more possible players seem to be declining to play overseas. I would also assume that Unrivaled will take a break in February for national team play as the team will still participate in Olympic qualifying.