Polish Prime Minister Tusk and Spanish Prime Minister Sanchez were reportedly close to exchanging insults during an EU migration summit. Poland, Italy and Denmark have demanded more from the EU against illegal immigration, and oppose Spain's plan to train 600,000 undocumented migrants. Sánchez, backed by France and Luxembourg, blocked the proposal. According to Polish reports, Tusk walked out of the meeting, forcing EU Council President Antonio Costa to persuade him to return. Note that illegal border crossings to the EU are down by about 30% this year, while only the route to Spain has increased by 26%. Tusk previously warned: "Spain must implement our immigration policy if we want Schengen to survive. ".