Yep, nail clippers are the answer! Luckily, the TSA has discovered that we knitters are not dangerous so we can now take our knitting with us again. I have to laugh when considering tiny scissors one uses for emboidery being considered dangerous. Couldn't they just decide on what size is okay and have them in the plastic bags with the liquids permitted?
But then, who am I to complain? I rather be safe than captured.