Spain’s Senate dealt a blow to the country’s foreign policy when the Partido Popular used its majority to block the Barcelona Treaty on September 29, 2026, the day President Emmanuel Macron arrived in Madrid for a state visit. What was meant to showcase unity with France instead became a public display of political infighting. Macron’s September 29 and 30 visit was the first by a French president since 2009, RTVE reported.
Macron and Pedro Sánchez signed the Barcelona Treaty in January 2023. Its goal was to bring Spain’s relationship with France up to the level of France’s established partnerships with other European neighbors, including Germany and Italy. France’s Parliament ratified the deal in 2025, but in Spain it stalled as the Partido Popular continued to block it in the Senate. RTVE and other reports said the Senate formally rejected it on September 29, with the Partido Popular’s majority carrying the vote.
The Partido Popular’s basic objection centers on a clause requiring a government member from one country to be invited to the other’s Council of Ministers at least once every three months, in rotation. Spain’s Constitutional Court ruled that the provision does not violate the country’s basic law. France uses similar rules in treaties with other European countries, and RTVE and other Spanish media reported that the court’s decision was unanimous. The legal argument against the treaty collapsed.
The Partido Popular calls itself pro-European and rooted in Christian humanism. Blocking a treaty built on European cooperation, especially after Spain joined the European Economic Community in 1986, shows how domestic disputes can spill into foreign policy. The Spanish government has called the treaty “historic” and compared it with France’s agreements with Germany and Italy. RTVE reported that officials pressed for quick approval after the Constitutional Court’s ruling.
The Senate’s rejection was more than a symbolic loss: it was a direct snub to a visiting head of state and overshadowed events hosted by Spain’s monarchy and government. Rather than strengthen Spain’s standing in Europe, the Partido Popular’s move left the country exposed. The basic opposition party openly undermined a basic alliance at a particularly sensitive moment. Spanish and French sources agreed that the ratification dispute cast a shadow over Macron’s visit, turning it into a symbol of Spain’s domestic political battles on the world stage.
RTVE also reported that the French government remained confident the treaty would eventually be ratified. In Spain, the agreement had remained in limbo since it was signed in Barcelona in January 2023. The controversy centers on the clause governing regular joint government meetings, which Spain’s Constitutional Court has deemed constitutional.
Macron’s visit was meant to highlight Franco-Spanish cooperation. The Senate’s action did the opposite, raising doubts about Spain’s reliability as a partner and its ability to present a united front in Europe.
The Barcelona Treaty’s text held no surprises: it contained no hidden deals and broke no European norms. The opposition’s refusal to move forward after the Constitutional Court’s approval looks like partisan warfare, with short-term politics taking precedence over Spain’s long-term interests. If the Partido Popular wants to govern, it will have to explain to Europe why it blocked a basic agreement with France for domestic gain. The dispute has damaged Spain’s reputation and set a precedent in which international commitments risk being sacrificed in domestic political fights.
