Does Republic Wireless have any US manufactured phones?
Based on this, I would say, no and neither does any other carrier
That would require that there be a US manufactured phone to offer. The only phone that is currently made in the US is the Librem 5 ( Purism– Librem 5 USA) which is a phone that is not compatible with Republic, and has 5 year old specs at a price at which you could buy two of today’s flagship phones.
Even at that, there are components sourced outside the U.S. The chassis originates in China, the modem chip in Germany and the WiFi card in India.