He is one of at least four US citizens from the greater New York area arrested in recent months on suspicion of being part of a ring of supporters of the group fighting in Iraq and Syria.
Nader Saadeh, who travelled to Jordan in May in an apparent attempt to join IS fighters in Iraq or Syria, is accused of conspiring and attempting to provide material support to the extremists.
He appeared before a magistrate at a US federal court in Newark, New Jersey yesterday where he heard the charges against him.
By April 2015, court papers claimed he had become a radical supporter of the IS group and was preparing to travel overseas.
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He allegedly justified extremist acts, such as the burning alive of a captured Jordanian pilot and the deadly January attack on the Charlie Hebdo magazine in Paris.
He allegedly viewed IS propaganda videos and researched flights to Turkey as panicked relatives, including his mother, sent him messages begging him not to join IS extremists.
The day before leaving, he allegedly discussed with two other conspirators their joint plan to travel onto Turkey and eventually join IS jihadists.
But Saadeh was arrested in Jordan shortly after his arrival, before being flown back to America to answer US justice.
Back in New Jersey, his 23-year-old brother Alaa Saadeh was arrested on June 29 and charged with conspiring to provide services and personnel to the Islamic State group and with witness tampering.
Last month Samuel Topaz, 21, from Fort Lee, New Jersey, was charged with conspiracy to provide material support to the Islamic State organisation.