Because they can. Take cash-stuffed German mega-companies, for instance.

They’re buying everything they can find in US-Amerika these days that hasn’t been tied down.

In recent days, two multibillion-dollar deals were announced. On Sunday, the German engineering conglomerate Siemens announced a $7.6 billion acquisition of the Dresser-Rand Group, the United States oil products company. And on Monday morning, Merck of Germany, the chemical and drug giant, said it would pay $17 billion for Sigma-Aldrich, an American life sciences company.

PS: Remember when Japan was going to take over the United States? No, I guess you wouldn’t remember that. Never mind.