Search for Higgs boson production in association with a top-quark pair at CMS

The top-Higgs coupling is one of the most important properties of the Higgs boson to be measured directly at the LHC. This coupling is most easily accessible through observation of Higgs production in association with pairs of top-quarks, or ttH production -- a process that has yet to be observed. Deviations from the expected ttH production cross section could indicate the influence of new physics in the top-Higgs interaction. This poster will review CMS results on ttH production from Run 1 and present the latest results from the 13 TeV dataset in Run 2