The clayton antitrust act of 1914 a) was used to justify the cries for american involvement in war in europe. b) was passed to guarantee an alliance between the u. s. and the united kingdom during world war i. c) was declared unconstitutional in 1922 by the supreme court's decision in federal baseball club v. national league. d) was passed to tighten loopholes in the sherman antitrust act of 1890 and increase government control of "big business" and monopolies.