There have been claims and counter claims on who discovered America.
Vespucci,Columbus,Phoenicians , Egyptians ….
Now comes the weirdest!
Muslims discovered America.
This assertion is being viewed as an attempt by the Muslim group to demand immigration to US.
Story:

In a Television interview to a Saudi TV Station on Dec 27,,Nihad Awad,the co-founder of the Council on American Islamic Relations.
“Some documents and accounts indicate that Muslim seafarers were the first to reach the U.S., [so] the bottom line is that Islam played a part in the establishment and development of the U.S.,” Awad told the Saudi interviewer, in an interview in a New York studio.
CAIR did not respond to The Daily Caller’s request for an explanation of Awad’s comments, which were recorded by the Middle East Media Research Institute.
Awad’s group bills itself as a “civil rights” group, but five of its former employees have been jailed or deported for terror offenses, and FBI officials refuse to meet Awad because of his ties to jihadi groups, such as Hamas.
http://dailycaller.com/2013/01/04/cair-chief-claims-muslims-discovered-america-first/#ixzz2H43I2r4t
‘In the early 20th century, a pair of Smithsonian-funded archaeologists (Prof. S.A Jordonand G.E Kinkaid) claimed that they found remnants of a thriving Egyptian civilizationstowed within a series of caverns carved into the side of a remote portion of the Grand Canyon. The story of this discovery was on the front page of the April 15, 1909 edition of the Arizona Gazette.
According to the article, a series of strange caves and artifacts were found in the Marble Canyon region of the Grand Canyon. The article also describes a cross-legged idol resembling Buddha, and a large tomb filled with mummified humans. However, all of these claims are denied by official sources.
http://ramanisblog.in/2012/09/29/egyptians-found-america-treasures-in-grand-canyon/


My research on Vedas indicate that 12,000 years back, there was a meteorite from Saturn fall on south pole and three Tsunamis entered in the Earth, and swallowed most of the planet.At that time, Seven continents created. The Tribes of US were worshiping Sun God, Fire God and offered paddy to Fire. If any one wish ready to mail more on this.
I know nothing about this claim.But one thing is certain.The steep rocks of Grand Canyan have different layers named after different GODs.These have different age description.The oldest rocks are aged about 1.96 billion years.And they are named Vishnu Schist.When I asked the caretaker their about the basis of this nomenclature he just told me that it was from long time back.The small mountains in the western rim of the Grand Canyan are named after different Hindu Gods.Why?In 2006 some human skeltons including those of infants were found inside under sea caves of Mexico.Scientist after detailed study and research declared in 2010 that those skeltons were atleast ten thosand years old and were of South Asian( Indian) origin.Now two thing are clear. One, Indians had free access to these far flung areas ten thousand years back.Second, they had the means to travel that far.
The kanchi Acharya has explained that Bharata Varsha included he areas of Central ans North America as well.
He has quoted extensively on Sun God Worship, Egyptian ans Sumerian beliefs.
You may find this in a Book on him ‘Deivathin Kural’Voice Of God’
English translation is also available at kanchimutt site.
You may also read some of my blogs under Bhakthi,Hinduism ,History