Christian Family face possible legal action

It's a set up.

Would a Kosher butcher be sued for not providing a pig for a hog roast?

Businesses can pick and choose who they serve. A restaurant, for example, could reasonably ask a group to leave if they were making a lot of noise and disturbing other customers, or if they were violating a dress code, eg men not wearing a shirt.
What they cannot do is discriminate on the grounds of race, disability, age or sexual orientation.

According to a news report the cake was ordered for an event at the town hall in support of gay rights, hosted by the mayor.

He allegedly said that 'he fully supports the action taken against the bakery. Businesses should not be able to pick and choose who they serve.'

Two thoughts on this: how much did a jolly like this cost (regardless of its purpose) when there are stringent cutbacks in essential services?

Is it true that a business has to supply goods - I understood that the supply of goods is a contract and that each party has to agree to the contract, eg if a shop does not wish to sell you an item they do not have to.

I agree that this may have been purposeful mischief-making and the bakery was 'set up' by the mayor or one of his cronies.

Sometimes I wonder if these things are not a great big set up and the bakery was deliberately approached knowing they would refuse the order.

I respect anyone's views although I may disagree with some of them. I don't think this family run bakery did anything wrong. They obviously have strong Christian values and could not bring themselves to go against their personal beliefs. It's a pity they just didn't say they were too busy and did not have the time or capacity to fulfill the order. Why would anyone (gay or not) contact the national press and make an issue out of it?