Thủ tục đăng ký thành lập (và điều hành) Hội Từ Thiện ở Mỹ

Need to register with different USA Departments:

a) Register for an Incorporated Non-profit Oganization (Association) in your State:

Incorporating Non-profit Organization (Association) in your State

California - Unincorporated Non-profit Association
Texas - Unincorporation Non-profit Association

b) Register for Charitable Activities / Solicitations in your State:

The National Association of State Charity Officials (NASCO) is an association of state offices charged with oversight of charitable organizations in the United States. The requirements and procedures for forming charitable organizations differ from state to state, as do the registration and filing requirements for organizations that conduct charitable activities or solicit charitable contributions.

National Association of State Charity Officials (NASCO)
US Charity Offices

c) Register a Charitable Non-profit Organization with Internal Revenue Service (IRS):

Important information from the IRS's Website specifically affecting charities
Charitable Non-profit Tax Exemption under section 503(c)3 of the Internal Revenue Code
Frequently Asked Questions about Tax-Exempt Organizations
Frequently Asked Questions about Applying for Tax-Exemption
Frequently Asked Questions about Operating as an Exempt Organization
More Topics on Charities & Non-profits
IRS Tax Payer Assistance Centers (TAC)

State Government Websites with useful information for tax-exempt organizations:

Regulation, Registration & Filings