The mission statement is "TACA provides education, support and hope to families living with autism".

Group founder Lisa Ackerman used to attribute autism to a wide range of causes, urging parents to get rid of flame-retardant clothing or mattresses and new carpeting.

TACA in Costa Mesa moved to a larger location due to the increasing number of parents attending meetings.

TACA goes nationwide with new chapters in California, Georgia, Hawaii, Illinois, Minnesota, North Dakota, Virginia, Washington and Wisconsin.

"The Autism Community in Action expresses exactly who we are and what we do," said Lisa Ackerman, co-founder and Executive Director.

[14] TACA was one of the sponsor groups of the Green our Vaccines march in Washington, D.C., on June 4, 2008, along with Generation Rescue.

[citation needed] Actress and noted anti-vaccine activist Jenny McCarthy and then-boyfriend Jim Carrey were prominently featured at the rally, along with several speakers making specific links between vaccines and autism.

[citation needed] In 2010, when the medical journal The Lancet issued a full retraction of Andrew Wakefield's research paper linking vaccines and autism, Rebecca Estepp, speaking for TACA, insisted she still trusted Wakefield's research.

[17] TACA’s stance post-COVID-19 to vaccinations seems to hold a hands-off approach, and have distanced themselves from much of the medical advice they gave in the past.