From Latina Lista - She points out that some of the supposed aggravated felonies can be considered to be misdemeanors.

So, it was surprising to see that after all the times the Department of Homeland Security and some congressional representatives had claimed that they wanted these undocumented immigrants to "get at the end of the line" and come here legally, they purposely chose to deport the majority of "alien parents of U.S. children" as aggravated felons knowing that these parents would never be allowed to visit or see their children legally in the United States again.

It can only be assumed that this was an underhanded way to permanently rid the nation of whole families. Knowing it could take years before any court might remotely consider hearing a deported parent's case, the government most probably hoped that the children and remaining spouse would give up to rejoin the deported parent.