Oh yes indeed I have researched the background from government and Congressional websites. The number of visas allowed for working and studying are less than a million per year and the limits and conditions are set by Congress, not the White House.
Obama’s current actions greatly exceed the legal limits and greatly expand the conditions that the law allows.
Does the President have the Constitutional power to grant citizenship, residency, and/or pardons?
Are there any limits to those powers specified in the Constitution itself?