On 5 February 2011, the PNL formed the Social Liberal Union (USL) political alliance with the PSD, the National Union for the Progress of Romania (UNPR), and the Conservative Party (PC). The PNL subsequently exited the USL on 25 February 2014, disbanding the alliance and returning to opposition. On 26 May 2014, following the 2014 European elections, then PNL party president Crin Antonescu announced he was seeking membership within the European People's Party (EPP). At the beginning of the 8th European Parliament, 5 of the PNL MEPs sat with the EPP Group, and 1 with the ALDE Group, who later became an independent MEP within ALDE. In late May 2014 the party agreed to a future merger with the Democratic Liberal Party (PDL), with the two parties main short-time goal being to submit a joint candidate for the upcoming presidential election. The PNL-PDL presidential candidate was agreed to run under an electoral banner called the Christian Liberal Alliance (ACL).