The President request $31.7B compared to the FY 2019 appropriation of $35.5B. For the Office of Science, he requests $5.5B compared to $6.6B in FY 2019. For the Office of Fusion Energy Sciences, he requests $403M compared to $564M in FY 2019. He proposes to eliminate the ARPA-E program entirely. ARPA-E received $366M in FY 2019 (which included some small activities in fusion energy).
For NNSA, he requests $16.5B compared to $15.2B in FY 2019. For Inertial Confinement Fusion, he requests $480.6M compared to $545M in FY 2019. For NNSA Science (which includes an unspecified amount for high energy density physics) he requests $586.6M compared to $480.4M in FY 2019.
Within the Office of Fusion Energy Sciences $403M FY 2020 request the President proposes $107M for the US contribution to the international ITER project and $296M for the US domestic fusion program compared to $132M and $432M respectively appropriated in FY 2019. The resulting $136M proposed reduction in the US domestic fusion program is spread approximately proportionately among all elements of the US domestic fusion program (-$137M) with the exception of a +$1M proposed increase for a construction upgrade for the fusion project at the Stanford Linear Accelerator.