Tenant declaring bankruptcy, how to protect myself?

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Single family home, USA

Tenant has not missed a payment (though they have only been on the lease for 6 months).  I just got a letter in the mail from a law office saying that my tenant is declaring bankruptcy. I only know a little about bankruptcy law so I want to understand where I am protected/exposed:

• Is their lease null and void now?
• Is the tenant required to continue paying rent?
• Should I start preparing for eviction?

These renters have not missed a payment, so I would rather not evict.  What I'm worried about (and this is where my legal knowledge breaks down) is that by having tenants that declared bankruptcy:

• they are no longer required to pay under their lease,
• I have no legal recourse if they decide to stop paying, or
• my landlord rights are reduced and it will become much harder to evict or force payment if they stay