The Iranian government is making efforts to recruit Iranian emigres in Canada (and probably the U.S.) to be a fifth column in the event of an outbreak of overt hostilities between the U.S. and Iran. See the story on the Fox News website.
In the event that this becomes something more than a recruiting effort, if actual fifth column terrorism occurs, one can imagine a renewal of the internment camps of World War II. Thus the title reference to Manzanar.
Yes, I know the conventional wisdom is that internment camps were horrible and violated civil rights, but they worked. Canada had them too.
Is Roosevelt lucky he died before he could be prosecuted as a war criminal? I doubt it. We give presidents wide latitude to win real wars.