Germany's opposition leader, Olaf Scholz, has pledged to bar people from entering the country without proper papers and increase deportations if he is elected chancellor next month. The move follows a knife attack by a rejected asylum-seeker in Aschaffenburg. Scholz's main election challenger, Friedrich Merz, has emphasized the need for stricter migration policy. Merz argues that Germany must exercise its right to national law and control borders permanently. The outgoing government has already implemented temporary controls and reduced unauthorized entry.