  Let S be an essentially smooth scheme over a field of characteristic exponent
c. Let MGL and HZ denote the algebraic cobordism spectrum and the motivic
cohomology spectrum over S, respectively. We show that the canonical map
MGL/(a1, a2, ...) -> HZ induced by the additive orientation of motivic
cohomology becomes an equivalence after inverting c. As an application, we
prove the convergence of the Atiyah-Hirzebruch spectral sequence for all
Z[1/c]-local Landweber exact motivic spectra.
