Born in Pieve di Cadore, Veneto, Menia is the son of an Istrian exile of Buje, who moved to Trieste after the war.

Menia began his political activity in the youth organization of the Italian Social Movement, under the leadership of Almerigo Grilz.

In 2004, Menia was the first promoter of the law which established 10 February as Day of Remembrance dedicated to the martyrs of Foibe.

On 21 March 2009, in the last Congress of National Alliance, Menia was the only one to vote against the dissolution of the party and its merge into The People of Freedom.

After the electoral failure, Fini resigned as President of FLI and Menia was appointed Regent Coordinator of the party.