US Senate Antitrust Sucommittee head Herb Kolk on Wednesday called for the Department of Justice and FCC to block the AT&T buyout of T-Mobile. Letters to the two agencies from the senator warned that the deal would be "highly dangerous to competition" and would run against antitrust laws. Since cellphones are so vital to the US, "full and vibrant" competition was essential so that they got the most choices and better prices.