Quit it.
He knows, he just does not like being baited for something you could look up.
Our infant mortality rates are WAY too high for a country that is supposed to be so great with all its technology and care plans.
It just shows that we are a bit skewed in that arena and things need to be dealt with, not argued over political lines.
Infant mortality is a tough thing to compare as there are quite a bit of factors that are variable among countries. What constitutes a live birth? Are abortions more acceptable? Are equal levels of high risk pregnancies carried through on? etc. etc. etc.. It's far more complicated than a simple percentage implies, but to truly understand it, you need some medical knowledge.