When I was on holiday in Poland two years ago I saw more baby carriages than I had ever seen in my life! I am not saying this article is wrong, but my own eyes say otherwise.
USA's birth rate is 1.6 versus Poland's 1.1 when both need to be 2.1 to maintain the population. What I do not know is if the large number of Polish men who left the country for employment are somewhat affecting that number.