help with history homework

[QueBert]

He has a history crossword puzzle, I actually knew a lot of the clues, but one has me stumped and I can't even figure out how to Google to find the answer. This is the last clue someone here knows it - help?

The Supreme Court's Power to declare acts of Congress unconstitutional.

I'm sure I'll get flamed for not knowing something that everyone will say is "OMGWTFBBQSAUCE COMMON KNOWLEDGE!" but I want him to turn this in and I serious am drawing a blank here.

 

[PottedMeat]

judicial review?

 

[Flammable]

how many letters?

 

[QueBert]

Originally posted by: PottedMeat
judicial review?

holy crap you got it, I even forgot to mention how many leters, you really rock man I appreciate it you don't know how much. Actually I don't know if that's it since I don't know it even after hearing it, but it has the right amout of letters and the 2nd letter was definitely a U so it works for me

 

[Legendary]

Originally posted by: QueBert

Originally posted by: PottedMeat
judicial review?

holy crap you got it, I even forgot to mention how many leters, you really rock man I appreciate it you don't know how much. Actually I don't know if that's it since I don't know it even after hearing it, but it has the right amout of letters and the 2nd letter was definitely a U so it works for me

That's definitely it.
See Marbury v. Madison if you'd like to impart some more knowledge.