  We compute the momentum-transfer dependence of the proton Pauli form factor
$F_{2}$ in the endpoint overlap model. We find the model correctly reproduces
the scaling of the ratio of $F_{2}$ with the Dirac Form factor $F_{1}$ observed
at the Jefferson Laboratory. The calculation uses the leading-power, leading
twist Dirac structure of the quark light-cone wave function, and the same
endpoint dependence previously determined from the Dirac form factor $F_{1}$.
There are no parameters and no adjustable functions in the endpoint model's
prediction for $F_{2}$. The model's predicted ratio $F_{2}(Q^{2})/F_{1}(Q^{2})$
is quite insensitive to the endpoint wave function, which explains why the
observed ratio scales like $1/Q$ down to rather low momentum transfers. The
endpoint model appears to be the only comprehensive model consistent with all
form factor information as well as reproducing fixed-angle proton-proton
scattering at large momentum transfer. Any one of the processes is capable of
predicting the others.
