1.   But all share an appealing simplicity.

2.   On its surface, this bill, co-sponsored by Joel Hefley, R-Colo., and Bruce Vento, D-Minn., has an appealing simplicity.

3.   To understand why the answer is yes, first set aside a view whose appealing simplicity is its undoing.

4.   What it also has is a predictable trajectory that works against such appealing simplicity.