Answer:
A law Congress created is declared unconstitutional by the Supreme Court.
Step-by-step explanation:
B is wrong because it just talk about the House of Representatives doing something (there is no checks of the other branches)
C is wrong wrong because it wasn't specific enough. If it was to say that the executive branch sent a treaty for the congress to approved, then it will be correct.
D is wrong because it just talk about the president doing something (there is no checks of the other branches)
Hoped I help!! :)