yeah, back in 2009 Sanford went missing. Turns out he was in Argentina with his lover.
http://www.washingtonpost.com/wp-dyn/content/article/2009/06/24/AR2009062403062.html
(Pics relevant)
Sanford went to Argentina in April.
https://www.fitsnews.com/2018/04/28/mark-sanford-went-to-south-america-again/
And in 2015 he got back together with his Argentinian girlfriend.
https://www.politico.com/story/2015/06/mark-sanford-maria-belen-chapur-relationship-119143