"In God We Trust" (sometimes rendered "In God we trust") is the official motto of the United States and of the U.S. state of Florida. It was adopted by the U.S. Congress in 1956, replacing E pluribus unum, which had been the de facto motto since the initial design of the Great Seal of the United States.

While the earliest mentions of the phrase can be found in the mid-19th century, the origins of this phrase as a political motto lie in the American Civil War, where Union supporters wanted to emphasize their attachment to God and to boost morale. The capitalized form "IN GOD WE TRUST" first appeared on the two-cent piece in 1864; it was not printed on paper currency until 1957 and on some postage stamps until 1954. A law passed in July 1955 by a joint resolution of the 84th Congress (Pub.L. 84140) and approved by President Dwight Eisenhower requires that "In God We Trust" appear on all American currency. Two years later, the phrase was used on paper money for the first time on the updated one-dollar silver certificate that entered circulation on October 1, 1957. The 84th Congress later passed legislation (Pub.L. 84851), also signed by President Eisenhower on July 30, 1956, declaring the phrase to be the national motto. Several states have also mandated or authorized its use in public institutions or schools; while Florida, Georgia and Mississippi have incorporated the phrase in some of their state symbols. The motto has also been used in some cases in other countries, most notably on Nicaragua's coins.The motto remains popular among the American public. According to a 2003 joint poll by USA Today, CNN, and Gallup, 90% of Americans support the inscription "In God We Trust" on U.S. coins; and a 2019 student poll by College Pulse showed that 53% of students supported its inclusion in currency. Some groups and people in the United States, however, have objected to its use, contending that its religious reference violates the Establishment Clause of the First Amendment. These groups believe the phrase should be removed from currency and public property, which has resulted in numerous lawsuits. This argument has not overcome the interpretational doctrine of accommodationism, which allows the government to endorse religious establishments as long as they are all treated equally, and that of "ceremonial deism", which states that a repetitious invocation of a religious entity in ceremonial matters strips the phrase of its original religious connotation. The New Hampshire Supreme Court, as well as Second, Fourth, Sixth, Eighth, Ninth, and Tenth Circuits have all upheld the constitutionality of the motto in various settings. The Supreme Court has discussed the motto in footnotes but has never directly ruled on its compliance with the Constitution.

In the United States Congress, a joint resolution is a legislative measure that requires passage by the Senate and the House of Representatives and is presented to the President for his approval or disapproval. Generally, there is no legal difference between a joint resolution and a bill. Both must be passed, in exactly the same form, by both chambers of Congress, and signed by the President (or, re-passed in override of a presidential veto; or, remain unsigned for ten days while Congress is in session) to become a law. Only joint resolutions may be used to propose amendments to the United States Constitution and these do not require the approval of the President. Laws enacted by joint resolutions are not distinguished from laws enacted by bills, except that they are designated as resolutions as opposed to Acts of Congress (see for example War Powers Resolution).

While either a bill or joint resolution can be used to create a law, the two generally have different purposes. Bills are generally used to add, repeal, or amend laws codified in the United States Code or Statutes at Large, and provide policy and program authorizations. Regular annual appropriations are enacted through bills. Conversely, joint resolutions generally are vehicles for purposes such as the following:

Authorizing small appropriations

For continuing resolutions, which extend appropriation levels adopted in a prior fiscal year, when one or more of the annual appropriations acts have been temporarily delayed from becoming law on time

Creating temporary commissions or other ad hoc bodies (e.g., the 9/11 Commission)

Creating temporary exceptions to existing law, such as joint resolutions providing a day other than January 6 for counting electoral votes or providing for a Saxbe fix reducing the pay of an office so that a member of Congress may avoid the Ineligibility Clause

Declaring war

Terminating national emergency declarations

Amending the Constitution of the United States

Annexing sovereign nation-states