Trump grounds Democratic speaker's foreign travel

Deadlock in Washington reached a new low Thursday as Donald Trump hit his chief Democratic opponent Nancy Pelosi with a last-minute cancellation of her plan to take an air force plane to Afghanistan -- citing the four-week-old government shutdown as a motive.The mess in Washington, where swaths of government workers are not being paid while Congress feuds with the White House, already verged on the surreal.In a letter laced with sarcasm and accompanied by his dramatic signature, Trump told House