Natural Gas Tax Repeal Act This bill eliminates a program administered by the Environmental Protection Agency (EPA) that provides incentives for petroleum and natural gas systems to reduce their emissions of methane and other greenhouse gases. It also repeals a charge on methane emissions from specific types of facilities that are required to report their greenhouse gas emissions to the EPA's Greenhouse Gas Emissions Reporting Program.

Defund EcoHealth Alliance Act This bill prohibits the award of federal funds to EcoHealth Alliance, Inc (including any subsidiaries or related organizations). This is a nonprofit research organization that studies coronaviruses in bat populations and other environmental health concerns. The Government Accountability Office must also audit federal funds provided to that organization over the past decade. The audit must include the amount of those funds provided by EcoHealth Alliance to China, the Chinese Communist Party, or the Wuhan Institute of Virology.