You're damned right it is...which is why we cannot afford a liberal Republican who's made it clear he intends to leave the borders open and grant amnesty to tens of millions of invaders.
If you don't think McCain will try to push through McCain-Kennedy amnesty through again, you're in for a rude awakening. At least with a Democrat trying to push that through, most congressional Republicans will grow a spine and stand up to another ram-rod amnesty plan. With a Republican at the helm, you know the RNC will squeeze 'nads and withhold money at the next election cycle if they don't get in line behind Señor Juan McAmnesty's Reconquista program.
“At least with a Democrat trying to push that through, most congressional Republicans will grow a spine ...”
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That seems unlikely, judging from the last 14 years.