I watched Obama's executive amnesty announcement on the Fox News Channel. Immediately afterwards one of the anchors claimed that Fox had at least twenty-five clips of Obama stating that such executive action was unconstitutional and that he had no authority to take this action.

I also recently found an Obama quote on the burdens that (illegal) immigration imposes on blue-collar workers.

In the Daily Beast article "The Liberal Case Against Illegal Immigration.", [November 27, 2014] Doug McIntyre (host of McIntyre in the Morning on KABC Radio ) quotes this:

"The number of immigrants added to the labor force every year is of a magnitude not seen in this country for over a century. If this huge influx of mostly low-skill workers provides some benefits to the economy as a whole... it also threatens to depress further the wages of blue-collar Americans and put strains on an already overburdened safety net."

It’s from The Audacity of Hope by Barack Obama. The article also quotes other liberal icons on the subject.