Research searching for life on Mars is funded by Exobiology, PSTAR, PICASSO and MatISSE, and the new program ICAR. Research into Mars habitability is funded by MDAP, PSTAR, Solar System Workings (SSW) and Habitable Worlds (HW). Coordination of projects that involve searching for life on Mars would be part of the RCN devoted to life detection, NfoLD.
Efforts to coordinate researchers interested in Mars through various activities are made on behalf of NASA by the Mars Exploration Program at JPL and the Mars Exploration Program Analysis Group (MEPAG), which cover the exploration of Mars including the habitability of and search for life on Mars (e.g https://www.hou.usra.edu/meetings/biosignature2016/ and https://www.hou.usra.edu/meetings/lifeonmars2019/). The Astrobiology Program will continue to lend support and to encourage the astrobiology community to participate.