When Russia pushed into Ukraine early this year, Mariia Shemiatina and Boris Shevchuk, who had married and become practicing physicians, posted videos of the bloodshed and antiwar messages on social media.Certain that they were on the brink of being conscripted to serve as medics on the front lines, or imprisoned for their political activity, the couple decided to flee.“I thought when we left Russia that our suffering would be over,” Mr. Shevchuk, 28, said in an interview from the Immigration and Customs Enforcement facility in Pine Prairie, La.ICE has not released statistics on the nationalities of migrants being held behind bars, but lawyers who work regularly with migrants say Russian asylum seekers appear to have been detained at relatively high rates in recent months — sometimes with bonds set in excess of $30,000.“Proportionately, compared to people from other countries, there are more Russians being sent to detention,” said Svetlana Kaff, a San Francisco-based immigration lawyer who said she has been flooded with requests for help."