Widows being deported

"60 minutes" just did a special this Sunday which I thought was really interesting. The U.S. government is deporting foreigners that were married to U.S. citizens. As a foreigner, if you are married to a U.S. citizen you are granted citizenship. According to these cases though, because they are not longer "married" (meaning that because of death, you are no longer legally married) they are considered "illegal aliens" and could face deportation. The unique case is that all of these unfortunate people lost their spouse's while the process of attaining their citizenship  was in process.  

 Tell me your thoughts...is this fair?