just tried to donate but...

The connection has timed out

The server at login.barackobama.com is taking too long to respond.

The site could be temporarily unavailable or too busy. Try again in a few
moments.
If you are unable to load any pages, check your computer's network
connection.
If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web.

It's not the second or third choice so I'm guessing the site is too busy.