joseph farah qusay is a professor of political history and international diplomacy at curtin university in melbourne. he says a ban may be difficult for biden to undo when he takes office. the president is a claim in these companies, 31 chinese companies, including some publicly traded companies on the new york stock exchange, are working very closely with chinese military and intelligence agencies. so by might have a little trouble backing away from that. it's an, it's an important decision the president made because he's putting enormous pressure on china right now. and china has been a dance a matter of cultural purchases it's most make in january. and keep in, keep in mind that is we are speaking. the chinese have responded to trump acknowledging the, the, the biden government. they think joe biden action and at the same time, are my pompei of the secretary of state, is lecturing the chinese that taiwan is not part of china. these are very dangerous things and to deal in this period of a lame duck presidency. and it's just an assumption that these companies have got something to do