Conundra is the Latin plural of conundrum, and a conundrum is either:
1) A difficult question or riddle, especially one using a play on words in the answer.
2) A difficult choice or decision that must be made.
The conundra presented here are both difficult questions, in the sense that their answers are not clear or obvious, and difficult decisions, in terms of the choices made (or not made) by the US government agencies responsible for them.
Source: http://en.wiktionary.org/wiki/conundrum
