  We analyze the Sivers asymmetry in light-cone gauge. The average transverse
momentum of the quark distribution is related to the correlation between the
quark distribution and the transverse component of the gauge field at $x^-\pm
\infty$. We then use finiteness conditions for the light-cone Hamiltonian to
relate the transverse gauge field at $x^-=\pm \infty$ to the color density
integrated over $x^-$. This result allows us to relate the average transverse
momentum of the active quark to color charge correlations in the transverse
plane.
