That's completely false. Walker in SoConPubbie's link was clearly talking about the need to welcome those with skill sets who would contribute to the U.S. This is also Ted Cruz's position.
Me? I vehemently oppose amnesty and also would like to see a moratorium on legal immigration, but I can understand Walker's point. Also bear in mind that Walker is not a declared candidate other than his re-election for Governor.
Palin, Cruz, or LOSE. Your choice.