Complex sentence: This election stunt had the side-effect of making Hanks into somewhat of a national celebrity in the United States, with Republican supporters writing to Hanks and Oglesby requesting "genuine Lincoln rails" split by Hanks and Lincoln.
Split into simpler sentences: This election stunt had the side-effect of making Hanks into somewhat of a national celebrity. Supporters requested "genuine Lincoln rails" split by Hanks and Lincoln.