I came across an advertisement for a postdoc position at a US school. While I have a PhD from a (different) US school, currently I am in India (my home country). I had contacted the PI to check with her to see if visa support is available for this position. She replied saying that she will support my visa if the fit is right. She also gave me a small problem to work on and asked me to return my solutions in a week. I did. It's been two weeks since and I haven't heard anything back.
While I realize that there could be any number of reasons for not replying (such as she's busy, or no longer interested or waiting for more people to apply), a simple reply confirming the receipt of my solutions would help.
If anybody has any ideas as to what to make of this situation, please do share.