If you believe the son of Esau are Roman or the USA, you are truly nuts. Have you ever been to southern Jordan or Saudi Arabia? The Bedouin can trace their relatives back 2000 years to Esau
See US and Britain in Prophecy, by Armatrong:
or
http://www.ucg.org/bible-study-tools/booklets/the-united-states-and-britain-in-bible-prophecy
or Google.
Kedarites (Bedouin) come from Ishmael. They are Ishmaelites.
Genesis
25:13 And these are the names of the sons of Ishmael by their names, according to their births: the firstborn of Ishmael was Nebaioth, and Kedar and Adbe'el and Mibsam,
25:14 And Mishma and Dumah and Massa,
25:15 Hadad and Tema, Jetur, Naphish, and Kedmah.
25:16 These are the sons of Ishmael, and these are their names in their open cities and in their walled cities, twelve princes to their nations.