In the 1950s, illinois enacted legislation requiring trucks to have curved mud flaps. there was no federal law about mud flaps at the time, but the illinois statute was enacted because state legislators asserted that the curved mud flaps were more effective in preventing accidents than the straight mud flaps. several trucking companies brought suit, because the illinois statute conflicted with the laws of other states that required straight mud flaps. was the illinois statute constitutional?
a. yes because it did not discriminate against out of state truckers.
b. no because it violated the commerce clause.
c. yes, there was no federal statute so the state statute did not violate the supremacy clause.
d. no, the supremacy clause does not allow conflicting state legislation.

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.