CNN The Situation Room April 29, 2013 21:26:00
Came back to the united states. he initially had told russian authorities that the reason he needed a passport was because he had lost his passport but he did arrive into the united states. and to get in he would have had to have both a passport alien registration card both of those documents, for him to be allowed back into new york which is where he flew into. investigators are also looking into a connection between tsarnaev and another young jihadist an killed in may of 2012. so you have these sort of two killings the one in12 and july 2012 by russian security forces who were cracking down ...
Source: archive.org