Family members of the four people ‘implore’ the Obama administration to do more to press for their release during nuclear program talks with TehranRelatives of four Americans held in Iran called on the Obama administration on Tuesday to do more to press for their release during negotiations with Tehran on a deal to roll back its nuclear program.Lawmakers from both parties said that if Tehran does not release them immediately, they would not trust the Iranian government to honor terms of any deal international negotiators are rushing to finalize before the end of the month.