or the solicitation of others to undertake acts of terrorism. Those who provide knowing assistance to a person who is planning to perform such activities are defined as undertaking terrorist activities. Such assistance includes affording material support, including a safe house, transportation, communications, funds, transfer of funds or other material financial benefit, false documentation or identification, weapons (including chemical, biological, or radiological weapons), explosives, or training to perform the terrorist act. The INA criteria for making a decision to designate an organization as a terrorist organization was amended to include the definition of a terrorist act as specified in section 140(d)(2) of the Foreign Relations Authorization Act, Fiscal Years 1988 and 1989. When an organization is to be designated a terrorist organization, seven days before making the designation under the Secretary of State must make a classified notification of this and the reasoning behind the decision in writing to the Speaker and Minority Leader of the House of Representatives, the President pro tempore of the U.S. Senate, the Majority and Minority Leaders of the United States Senate, and the members of the relevant committees of the House of Representatives and the Senate. The Secretary must also publish the designation in the Federal Register seven days after providing the notification. The Secretary of State can redesignate any such organization at the end of a two-year redesignation period for an additional two years if the situation that caused the original designation has not changed. Though the amendment is retroactive, this does not mean that it can be applied to members who joined an organization, but since left, before it was designated to be a terrorist organization under by the Secretary of State. Mandatory detention provisions The Act added a new section (section 236A) to the INA, which requires the Attorney General, or his deputy, to take into custody any alien who is engaged in terrorism, or who is engaged in an activity that endangers U.S. national security, or who is inadmissible or deportable because it is certified they: are attempting to enter in order to undertake illegal espionage, are exporting goods, technology or sensitive information illegally or are attempting to control or overthrow the government; or have, or will have, engaged in terrorist activities. The Attorney General or the Attorney General's deputy may maintain custody of the alien until they are removed from the U.S., unless it is no longer deemed they