technology #AI #Policy #AIChips #DonaldTrump #FrontierAi #H20Chips #HowardLutnick #JensenHuang #NVIDIA #Semiconductors #Tariffs #TrumpTariffs #UsChinaTradeWar Trump caving on Nvidia H20 export curbs may disrupt his bigger trade war Ars Technica Mon 2m read