[higgmeister]

The Mace of the United States House of Representatives has ebony shafts bundled together.

The design of the mace is derived from an ancient battle weapon and the Roman fasces. The ceremonial mace is 46 inches (120 cm) high and consists of 13 ebony rods—representing the original 13 states of the Union—bound together by silver strands criss-crossed over the length of the pole. The rods are bound together by four crossing ribbons of silver, pinned together and held at the bottom and at the top by silver bands. The bands are decorated with floral borders and a repoussé design. The name “Wm. Adams/Manufacturer/New York/1841.” is engraved in the cartouche, located in the front center of the bottom band. This shaft is topped by a silver globe 4-1/2 inches in diameter and engraved with the seven continents, the names of the oceans, lines of longitude, and the major lines of latitude. The Western Hemisphere faces the front. The globe is encircled with a silver rim marked with the degrees of latitude, on which is perched an engraved solid silver eagle with a wingspan of 15 inches. The total weight of the mace is 10 pounds.[5]

[Jamestown1630]

The Eagle is not holding a 'mace', but the arrows do signify the power of war.

From Wiki:

'The primary official explanation of the symbolism of the great seal was given by Charles Thomson upon presenting the final design for adoption by Congress. He wrote:

'The Escutcheon is composed of the chief & pale, the two most honorable ordinaries. The Pieces, paly, represent the several states all joined in one solid compact entire, supporting a Chief, which unites the whole & represents Congress. The Motto alludes to this union.

'The pales in the arms are kept closely united by the chief and the Chief depends upon that union & the strength resulting from it for its support, to denote the Confederacy of the United States of America & the preservation of their union through Congress. The colours of the pales are those used in the flag of the United States of America; White signifies purity and innocence, Red, hardiness & valor, and Blue, the colour of the Chief signifies vigilance, perseverance & justice.

'The Olive branch and arrows denote the power of peace & war which is exclusively vested in Congress.'

I think the author got some of the meanings mixed up.