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The Milky Way (MW) dwarf spheroidal satellite galaxies (dSphs) areparticularly intriguing targets to search for gamma rays from WeaklyInteracting Massive Particle (WIMP) dark matter (DM) annihilation or decay.They are nearby, DM-dominated, and lack significant emission from standardastrophysical processes. Previous studies using the Fermi-Large Area Telescope(LAT) of DM emission from dSphs have provided the most robust and stringentconstraints on the DM annihilation cross section and mass. We report ananalysis of the MW dSphs using over 14 years of LAT data and an updated censusof dSphs and $J$-factors. While no individual dSphs are significantly detected,we find slight excesses with respect to background at the $\gtrsim 2\,\sigma$local significance level in both tested annihilation channels ($b\bar{b}$,$\tau^+\tau^-$) for 7 dSphs. We do not find a significant DM signal from acombined likelihood analysis of the dSphs ($s_{global}\sim 0.5\sigma$), yet amarginal local excess relative to background at a $2-3\,\sigma$ level isobserved at a DM mass of $M_{\chi}=150-230$ GeV ($M_{\chi}=30-50$ GeV) forannihilation into $b\bar{b}$ ($\tau^+\tau^-$). Given the lack of a significantdetection, we place updated constraints on the $b\bar{b}$ and $\tau^+\tau^-$annihilation channels that are generally consistent with previous recentresults. As in past studies, tension is found with some WIMP DM interpretationsof the Galactic Center Excess (GCE), though the limits are consistent withother interpretations given the uncertainties of the Galactic DM densityprofile and GCE systematics. Based on conservative assumptions of improvedsensitivity with increased LAT exposure and moderate increases in the sample ofdSphs, we project the local $\sim 2\,\sigma$ signal, if real, could approachthe $\sim 4\,\sigma$ local confidence level with additional $\sim 10$ years ofobservation.

Legacy Analysis of Dark Matter Annihilation from the Milky Way Dwarf Spheroidal Galaxies with 14 Years of Fermi-LAT Data