Stupid or Ignorant?

This is a question I often have about Republicans. Ignorant I can deal with, ignorant is treatable through knowledge. Stupid, I got nothing.

A case in point: just now on the House floor, Don Young used the same bogus Lincoln quote that was thoroughly debunked on the Internet after showing up on the front page of the Washington Times. Lincoln never called for the hanging of Congressmen, and even the author who attributed the quote to him has admitted that.

And yet, Young still used the quote.

Does he KNOW that it's completely fabricated, but it sounds good in the mouth of someone of Lincoln's stature, or did he see it on the front page of the Moonie Times and assume it was true and never bother to check any further? Which is it? Like I said, I think ignorance is the better option.