What progressive political issue did Roosevelt and Wilson most differ during their 1912 presidential campaigns?

During the 1912 presidential campaigns, Theodore Roosevelt and Woodrow Wilson most notably differed on the issue of antitrust regulation and economic reform. Roosevelt, advocating for a more interventionist approach, supported the idea of regulating monopolies and maintaining a balance between big business and the public interest, which he termed the "New Nationalism." In contrast, Wilson championed a more laissez-faire approach with his "New Freedom," emphasizing the need to dismantle monopolies rather than regulate them, advocating for greater competition and less government intervention in the economy. This fundamental disagreement highlighted their differing philosophies on how best to achieve social and economic justice.