I'm not in my native country. I'm here in CA and am now an American citizen. When I'm old enough and if there's still SS to draw I will receive a reduced American amount then it will be made to the full amount by my UK SS. But the minimum age is still 62 yrs old, not 55 yrs old. It's not a free giveaway as you were indicating.
http://www.goodolddogs3.com/HonorOurVets.html
But there are actually millions of people getting freebies from Social Security. Did you know that a big chunk of the retirement population brought here under 'extended family' applications for citizenship or visas are retirement age family of existing 'anchor babies' who then get to apply for Social Security? Seems wrong? Yes. But Medicaid will cover them and they can get free government services in states like CA where the political class refuses acknowledge that citizenship it a different class than 'resident.'