copyright national cable satellite corp. 2011] >> on today's "washington journal" we will talk to henry cuellar of texas. it begins love it 7:00 a.m. eastern time up on c-span. this june, the balance between security and liberty, the difficulties of a climate change treaty, and the limits of international law. your questions for altering university of chicago law professor eric posner. we'll take your calls, e-mails, and tweets, lies a june thaw. --live june 5. >> we have book-tv events on c- span 2 including interviews with authors. plus, a look at the book industry with local booksellers and american history events on c-span 3 from the st. petersburg museum of history, the first scheduled commercial aircraft and a hidden history of angola, a settlement of 40 to 50 former slaves and seminal indians who fought two wars against the u.s. in the early 1800's. the city's tour kicks off this weekend, watch it on c-span 2 nc spam 3. >> up next: vice president joe biden delivers remarks at a new hampshire democratic party fund- raising events. his speech was part of the annual mcintyre dinner. whittle