Some Baltic emigres to the west were clearly guilty to crimes against humanity. https://en.wikipedia.org/wiki/Viktors_Ar%C4%81js comes to mind.
I do not share your surprise about the pressure on the White House though. This gets easier to understand through a personal histories lens. Imagine you were a young male adult Latvian in 1940:
- 1940: native country annexed by the USSR. Most upper class deported to Siberia.
- 1941: native country occupied by Nazi Germany.
- 1942: forcibly conscripted into the Latvian Legion of the Waffen SS
- 1944-1945: native country occupied by the USSR again. escape to western Europe.
- 1946-1950: native country still occupied, move to the Chicago area like so many Baltic refugees
- 198x: native country still USSR occupied, USSR still actively targeting US exiles.
I can perfectly imagine such a person to: - condemn nazi crimes, particulary anti-semitic ones - always have been respectful towards ever human - be scared of deportation to an occupied native country without an independent judiciary - be very supportive of rigorous due process for Baltic emigres