After 1908, Mille sided with the Take Ionescu-led politicians who split from the Conservative Party to form the Conservative-Democratic grouping. Like Ionescu, he supported measures for the union of Transylvania, Banat, and Bukovina with the Kingdom of Romania, and visited the region to attend meetings of the Romanian National Party, but, in 1908, came into conflict with its prominent activist Iuliu Maniu — while Mille insisted that Romanians in Transylvania and the Banat were to seek collaboration with left-wing forces in Romania, Maniu presented a purely nationalist perspective, indicated that he expected support from the entire Romanian community. Sever Bocu, According to Sever Bocu, who witnessed the debate, Mille considered Maniu's position "reactionary". Adevărul notably condemned the disadvantageous trade convention signed between Romania and Austria-Hungary, signaled that Romanians in the region were being subjected to violence, and alleged that the Austro-Hungarian state had included within its borders ridges of the Carpathians that it had no right to own.
