Tex. Government Code § 305.001

The operation of responsible democratic government requires that the people be afforded the fullest opportunity to petition their government for the redress of grievances and to express freely their opinions on legislation, pending executive actions, and current issues to individual members of the legislature, legislative committees, state agencies, and members of the executive branch. To preserve and maintain the integrity of the legislative and administrative processes, it is necessary to disclose publicly and regularly the identity, expenditures, and activities of certain persons who, by direct communication with government officers, engage in efforts to persuade members of the legislative or executive branch to take specific actions.