Answer:
President
Step-by-step explanation:
Just like president in United States, the Chancellor in Germany held the role of as the head of the executive branch.
There's one main distinction between the two of them.
United States is run based on presidential system. In this system the legislative agenda is controlled solely by Legislative branch (which is the Congress), while President generally put the focus on executive matters. Individual members of legislative branch hold a lot of power within the presidential system
Germany on the other hand is run based on a parliamentary system. IN this system, the legislative Agenda is controlled by the head of executive (in Germany, it would be the Chancellor). This means that individual members of legislative branch hold very little power in this system.