Henning teaches courses on the political system of the Federal Republic of Germany, European integration, theory and history of the modern constitutional state, and, to some extent, comparative political science.
His research interests also include European integration, democratic theory, party politics, and the relationship between law and politics.
The topic of his dissertation, Zwischen politischer und rechtlicher Verfassung: Hybridisierung der britischen Verfassung durch den UK Supreme Court?, which was published as a monograph in 2025, also falls within this field of research.
In his cumulative postdoctoral thesis, he addresses questions relating to new forms of governance, and explores the possibilities of governing ‘by proxy’ at national and supranational levels, thereby linking his fields of research.
