The Constitution gives many rights to citizens and non-citizens living in the United States. However, there are some rights the Constitution gives only to citizens, like the right to vote. When you are naturalized, you will be given the right to vote.

In addition, citizens receive U.S. Government protection and assistance when abroad.

Only a citizen has the right to hold most city, state or federal offices, and the right to hold certain federal, state and city jobs.

Citizens cannot be prevented from re-entering the U.S. or be deported.

Many financial aid grants, including college scholarships and funds given by the government for specific purposes, are available only to U.S. citizens.

Citizens do not have to worry about renewing their green cards every ten years.

Citizens who retire abroad receive full Social Security benefits (whereas lawful permanent residents receive only half their benefits) and citizens may be subject to fewer restrictions on estate taxes, higher estate tax exemptions.

Citizens are eligible for more public benefits, such as Supplemental Security Income (SSI) and Food Stamps, and certain types of educational scholarships and financial aid.

Obtaining citizenship for children born abroad. In most cases, a child born abroad to a U.S. citizen is automatically a U.S. citizen.

Reuniting Families
This is the most attractive benefit of becoming US citizen. As a US citizen, you can sponsor your parents, spouse and minor children (no quota or limits or priority dates) to come and live with you as permanent residents. You can also sponsor other relatives such as sons and daughters above the age 18, brothers, sister etc; however, there is waiting involved. You can get all the details about this at Family Based Immigration

Travel Matters
As a U.S. citizen, you are not restricted on the time you can spend outside of the U.S. Permanent residents can lose their status if they leave the country for 180 days or longer (Read about Retaining Green card). For absence out of US for more than 6 months, permanent residents must obtain a re-entry permit. As a U.S. citizen, you can skip this process and live abroad without jeopardizing your citizenship status. Travel is also more convenient because many countries do not require visas of U.S. citizens such as UK, many countries in Western Europe, Australia, New Zealand, Japan.

Cases of Illegal Activity
All the people in USA have the duty to follow the laws. However, it is beneficial to be US citizen in the event you are accused of any illegal activity. As a permanent resident, you remain within the authority of the U.S. of Citizenship and Immigration Services and the Immigration Courts and can be removed (or deported) for such activity. As a US citizen, you have the right to an attorney and a fair trial without being deported.

US citizenship for children under 18
Permanent resident children under the age of 18, who are in the lawful legal and physical custody of their naturalizing parent/s, automatically become U.S. citizens when their parent/s become naturalized.

Responsibilities