A recession in the U.S. can have various impacts on Australian stocks, influenced by several interconnected factors. 

I have been researching some potential effects:

Changes Market Sentiment: A Negative sentiment in the U.S. can lead to declines in stock markets worldwide, including Australia.

Volatility: Uncertainty increased market volatility , impacting Australian stocks.

Exports: The U.S. is a trade partner for Australia. Reducing demand, affecting companies in mining, agriculture, and manufacturing.

Commodity Prices: Could lower global demand for commodities, leading to price drops and lower revenues.

Australian Dollar: Weakening the U.S. dollar strengthens the Australian dollar. Make Australian exports more expensive and less competitive globally.

Monetary Policy: Lower interest rates in the U.S. to stimulate the economy could influence the Reserve Bank of Australia (RBA) to adjust its own monetary policy. Lower interest rates in Australia could boost borrowing and investments.

Foreign Investment: U.S. investors might reduce their international market investments, including Australia, to manage risk.

Domestic Investment: Australian investors might also become more cautious, impacting overall market activity and valuations.

The worst sectors that would be affected are the Resources Sector, the Financial Sector, and Consumer Sector.

As an Australian or investor, how might I look at managing this?[Smug] 

Investing in companies that can potentially weather the storm or even benefit from a recession. These are companied that will always be utilised despite the cost.

Examples

Healthcare such as $CSL LIMITED(CSL.AU)$  - (biotechnology in blood and vaccines) or $RAMSAY HEALTH CARE LTD(RHC.AU)$  Private hospital operators)

Consumer staples such as $WOOLWORTHS GROUP LTD(WOW.AU)$   or $COLES GROUP LTD(COL.AU)$  (Woolworths or Coles are the largest grocery chains providing essentials)

Utilities such as $AGL ENERGY LTD(AGL.AU)$  or ASX:APA (Large companies providing Gas and Electricity including their infrastructure)

Other examples

Strong dividend stocks such as ASX:CBA or ASX:WBC

Precious Metals such as ASX:NCM ASX:EVN

Infrastructure and Real Estate such ASX:TCL and ASX:SYD

Real Estate Investment Trusts (REITs) such as ASX:GMG and ASX:SCG

Telecommunications such as ASX:TLS

Keeping in mind to consider making sure my portfolio is -

Diversified: Spreading investments across different sectors to reduce risk.

Researching: Conduct thorough research or consult a financial advisor to ensure these companies fit your investment strategy and risk tolerance.

Staying Updated: Keeping an eye on economic indicators and company performance to adjust my portfolio as needed.

During this time enhancing my skills and education, making sure I have stable income streams, having an financial emergency fund/buffer, reducing debt and cutting any unnecessary expenses, prioritising essentials.

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These suggestions are based on the general principles of defensive investing and the characteristics of the companies mentioned. Make sure to consider your financial goals and do further research before making investment decisions.