The action of FDR justifies the recent action of President Trump. Just as FDR, President Trump is doing this for the cause of National Security.
And there is a big difference between preventing people trying to get Visas to the United States who might be terrorists versus just BLINDLY IMPRISIONING people based on race as FDR did.
There are a number of sources of information on what FDR did. I will try to post links in this thread about this issue.