Trump meets Japanese Emperor as he begins business portion of state visit
https://edition-m.cnn.com/2019/05/26/politics/trump-japan-visit/index.html?r=https%3A%2F%2Fedition.cnn.com%2F
It's interesting that Republican Leader met Emperor as the diplomatic interaction.
Originally, Republicans are against monarchy system, which usually includes Japan's emperor system.
But, Trump doesn't seem to think about it seriously. Or perhaps, he doesn't know the history of republicanism.