In many ways, America is like a melting pot. With the many cultures and different types of people that reside in the United States presently, the many aspects of each culture combine to create a "salad bowl". Especially during the beginning years of American history, this great country was definitely an assortment of many different people with extremely different backgrounds.
As time has progressed, people still boast drastically unique lineages and ancestors, but an American identity has emerged as of late. Most citizens of the United States now identify with their American identity rather than that of their ancestors even if they still may practice certain traditions of their cultures of origin. For example, my family originates from England and France; however, I identify more with being an American rather than being of French or English heritage. My family still practices traditions from my ancestors such as Mardi Gras and different cooking styles. This could be different for other Americans depending on how recently their families moved to the United States.
While the ideals of the founding fathers aimed to create a peaceful, accepting country, sometimes cultural differences make it difficult to understand and accept one another. This causes less of a harmonious mix than the ideal "melting pot" or "salad bowl". So while the United States is a mix of people with dissimilar backgrounds originally, the American identity overshadows these cultural ties to many citizen's original backgrounds.