The executive branch of the Us government is made up of the president, vice president and their team. They have the overall responsibility to run and protect the USA. A significant role of the president is that he is the commander in chief of the united sates armedforced. This means that he can order the use of troops overseas in order to protect the country and protect the US interests internationally.
example + analysis 1
For example, in 2021Joe Biden went against advice and decided to withdraw all troops from Afghanistan instead of only withdrawing some. This shows the executive branch is dominant as they did not need approval from other members of the government to go through with this.
point 2
However, the president cannot declare war over another country or sign an international treaty without the approval of congress.
example + analysis 2
For example, in 2002 congress approved the invasion on Iraq when George Bush was president. This shows there are things in place to help ensure that powers are spread equally throughout the 3branches of government.
overall
Overall, the Executive Branch is dominant as they can order troops overseas, but declaring war requires Congress's approval, showing a balance of power between both branches.