Adam Price borrows Obama's slogan 'Yes, we can' as he calls for independence in his first Plaid conference speech as leader The newly-elected Plaid leader gave his party an optimistic message telling them independence for Wales was both possible and necessary Wales will never be able to solve its economic problems until it becomes an independent state in charge of its own destiny, Plaid Cymru leader Adam Price told delegates to his party's conference in Cardigan. During a passionate speech he called on everyone who cares about Wales to join Plaid and help build a new more prosperous nation.