UPDATE: Feb 13. 2017
Effective April 1, 2016, all travelers under the US VWP(Visa Waiver Program) must have e-passport (passport with an embedded electronic chip), and must obtain an approved ESTA, 72hours prior to the flight departure.
Please refer here for more details.
According to US law, if a departing passenger is discovered to be carrying restricted items in carry-on baggage at an airport security checkpoint, the passenger may be subject to a fine. Be sure to put such items into check-in luggage.
Dangerous Goods are not permitted in either check-in or carry-on luggage. If such articles are discovered by a security inspection, the passenger may be subject to a fine under US law.
As of December 31, 2002, the US Transportation Security Administration (TSA) has strengthened inspections for explosives in the check-in luggage of passengers departing from or changing planes at US airports.
Since the TSA opens check-in luggage for inspection whether it is unlocked or not, avoid packing cash, precious metals, electronic devices or other valuables in your check-in luggage.
The high-performance scanning equipment used by the TSA for luggage inspection may damage camera film and videotape. Therefore, these items, like valuables, should not be placed in check-in luggage.
Due to the additional time required for security checkpoint inspections, be sure to arrive early at the airport.
As of August 4, 2007, the TSA’s ban on taking lighters through security checkpoints at US airports and onto flights to and from the US, which went into effect on April 14, 2005, has been lifted. Therefore, each passenger may bring one lighter aboard flights to and from the US, just like on other routes. However, since lighters contain flammable liquid classified as a hazardous material, they are still prohibited in check-in luggage.
As of June 26, 2005, US Customs and Border Protection (CBP) requires that visitors from Visa Waiver Program countries have machine-readable passports. If you do not have a machine-readable passport, you must obtain a visa to visit the US.
US Customs and Border Protection (CBP) has been requiring airlines to report passenger passport information before their arrival in the US (including Guam). Starting October 4, 2005, however, the following additional information also needs to be provided.
1.Place of stay in the US Zip code, state, city, street address and hotel name
2.Country of residence