Is an umbrella policy a business expense?

[Clark Kirkpatrick]

The reason for the umbrella policy is the business - it increases my net worth (so I'm a better lawsuit target) and it increases my liability (tenants, contractors, the neighbor who walked by and slipped on the ice). 

Is it a business expense, or partly a business expense? Can I pay for it from my business account, write it off and call it a day?

Thanks in advance!