What are two elements of american culture that had been borrowed from ancient roman cultures.

Both Rome and the United States of America were great powers whose influence affected world affairs.  Apart from being superpowers, both shared similar cultural traits.   One such cultural trait is both are open societies.  Both Rome and the U.S. welcome immigrants.  At the height of its power Rome had many foreigners living in its City.  Many of these foreigners built thriving businesses and their quality of life improved.  Just like in Rome, the U.S. also welcomes foreigners to its shores.  Many who have acquired American citizenship are now living prosperously thanks to the promise of the American Dream.