Michael Sheen is flying to Wales from Los Angeles today to visit the Welsh-based charity, Healing Wounds.
Sheen is patron for the charity which helps to support those in the armed forces and their families, as well as offering treatment for Post-Traumatic Stress Disorder.
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Representatives of the Conservative, Labour, Liberal Democrat, Plaid Cymru, Wales Greens and UKIP parties will debate on April 22.
A petition will be handed in at the Senedd later calling for rules to prevent the use by under 13's in care of social media sites.
Technology projects that promote the Welsh language are to get over £250,000 of funding to help encourage more use of in digital media.