Nursing bruises and bites, travellers are able to discover an abandoned city that is still revealing its secrets, exploring green copses and stone paths through dense jungle, bathing in waterfalls, sleeping among ruins, and most majestic of all, watching the clouds spill across the terraces at sunset each night.

BBC: Trekking to Colombia��s Lost City

But Mr. Ryan's advocacy of that principle is particularly important now because storm clouds are gathering over the push for immigration changes, among other conservatives generally and in the House in particular.

WSJ: Ryan Takes a Key Role on Immigration