How to get a comprehensive medical insurance cover while traveling to the US for a vacation?

I intend traveling to US with my family (wife & kid of 35 and 2 years age) on a B1/B2 visa which is just a visit visa. My global medical insurance cover does not cover US and Canada. Will appreciate information which can help me resolve this.

Is it worth buying the priceline travel insurance? Can you get a refund if you get sick prior to traveling?

I am about to book flight & car rental through priceline. I have never purchased travel insurance so I have questions.
What illnesses qualify for cancellation insurance? I am concerned with the flues that are going around since I am going to visit my grandmother.
If you do get sick, how do you prove [...]

Cheap Auto Insurance – 10 Crucial Tips For Traveling Teens And Petrified Parents

Cheap auto insurance can cost you a bundle if you don’t keep a few crucial tips in mind. You have to do your homework to ensure that you understand the fine print – especially if you have a teenager on the verge of discovering the joys and freedom of driving. You don’t want to discover [...]