it's not a policy i would support, advance or implement if i were running the world (i would rather focus on foreign aid work and nation-building, which was working in afghanistan before dhimmi joe pulled out), but i can understand why some of the countries are on the recently published travel ban list. i couldn't understand why some of the others were. i understand that burma is undergoing some political instability, and that this is tied into a geopolitical struggle between the us-uk and the chinese (people forget that burma (myanmar) was the easternmost section of the british india, and split off because it was buddhist (while pakistan and bangladesh were split off due to being muslim)), but i have never heard of any kind of burmese instability exported to the west in any way.

so i looked up the order.

(i)   According to the Overstay Report, Burma had a B‑1/B-2 visa overstay rate of 27.07 percent and an F, M, and J visa overstay rate of 42.17 percent.  Additionally, Burma has historically not cooperated with the United States to accept back their removable nationals.

(ii)  The entry into the United States of nationals of Burma as immigrants and nonimmigrants is hereby fully suspended.

well, presuming that is actually true, it's a reasonable justification.