Question

which power does the president have as chief executive?
issue orders that spell out policy details
determine what bills congress may debate
decide which cases will be heard by the u.s. supreme court
enforce laws passed by state legislatures

Explanation:

The president, as chief executive, has the power to issue executive orders which spell out policy details. The power to determine what bills Congress may debate is not a presidential power in this context. The Supreme Court itself decides which cases it will hear, not the president. And the president enforces federal laws, not laws passed by state legislatures.

Answer:

issue orders that spell out policy details