Who put you in charge of determining which sources are credible? I find CIS to be far more credible then Tamar Jacoby at the Manhatten Institute or anything that is being published by the National Chamber of Commerce or the CATO Institute on this subject. They have a nasty habit of only telling half the story. For example, a few months ago they put out a series of articles touting the $6 billion contribution to Social Security but failed to mention the far larger costs imposed by illegals at both the Federal and State levels. If you think a deliberate attempt to mislead makes them credible, I question your qualifications for making that determination.
But I am waiting for you to post one of your credible sources that shows that this totalization deal will not impose an enormous drain on the Social Security System and American taxpayers. I watch these things closely and I have never seen anything credible or incredible for that matter (except for the posts of a few whacky open borders freepers) that made such a claim.
Translation: Their facts do not support my fantasy.
CIS is probably THE MOST credible.
There is only one arbiter of who's fact are credible and who's facts are not. That is the judiciary. If policy or legislation is created based on sources of facts that are not credible, that policy or legislation could not withstand legal challenges.
CIS not a credible source??? Better tell that to your Republican congress. They testify for hearings all the time.