In the Călin Popescu-Tăriceanu cabinet, he was Minister-Delegate for International Financing Programs and European Community Acquis from 2004 to 2007 and Minister of Interior and Administrative Reform from 2007 to 2008.

[1] He paused his business activity from 1997 to 1998, when he was an adviser to the Youth and Sport Minister, the future PNL President Crin Antonescu.

[1] Entering politics after the fall of the Communist regime, he was coordinator of the University National Liberal Youth (TNL) from 1990 to 1993, rising to secretary general from 1993 to 1997.

Later, while Minister-Delegate, David was accused of taking no action when allegations surfaced that Vlasov embezzled €211,000 in European Union funds.

In reply, David stated that the residence was his girlfriend's and was being rented to his Dutch business partner, and that he was questioned as a witness in the case.