In 1908, the U.S. Congress rejected a proposal to make Mother's Day an official holiday, joking that they would also have to proclaim a "Mother-in-law's Day". However, owing to the efforts of Anna Jarvis, by 1911 all U.S. states observed the holiday, with some of them officially recognizing Mother's Day as a local holiday (the first being West Virginia, Jarvis' home state, in 1910). In 1914, Woodrow Wilson signed a proclamation designating Mother's Day, held on the second Sunday in May, as a national holiday to honor mothers.
Although Jarvis, who started Mother's Day as a liturgical service, was successful in founding the celebration, she became resentful of the commercialization of the holiday, and it became associated with the phrase "Hallmark holiday". By the early 1920s, Hallmark Cards and other companies had started selling Mother's Day cards. Jarvis believed that the companies had misinterpreted and exploited the idea of Mother's Day and that the emphasis of the holiday was on sentiment, not profit. As a result, she organized boycotts of Mother's Day, and threatened to issue lawsuits against the companies involved.
In Britain, Constance Adelaide Smith was inspired to advocate for Mothering Sunday, an already-existing Christian ecclesiastical celebration in which the faithful visit the church in which they received the sacrament of baptism, as an equivalent celebration. She referred to medieval traditions of celebrating Mother Church, 'mothers of earthly homes', Mary, mother of Jesus, and Mother Nature. Her efforts were successful in the British Isles and other parts of the English-speaking world.
In 1912, Anna Jarvis trademarked the phrase "Second Sunday in May, Mother's Day, Anna Jarvis, Founder", and created the Mother's Day International Association.She specifically noted that "Mother's" should "be a singular possessive, for each family to honor its own mother, not a plural possessive commemorating all mothers in the world." This is also the spelling used by U.S. President Woodrow Wilson in his 1914 presidential proclamation, by the U.S. Congress in relevant bills, and by various U.S. presidents in their proclamations concerning Mother's Day.