“The reality the President has had to weigh is that we're in the midst of the political season, and because of the Republicans' extreme politicization of this issue, the President believes it would be harmful to the policy itself and to the long-term prospects for comprehensive immigration reform to announce administrative action before the elections,” a White House official said.
No, 63% of American citizens don't want them and if he goes ahead the Democrats will LOSE. Always the political strategy for "The Party", not the the people.

If the Republicans were smart, they would boycott NBC news. JMO