washington homeland security chief john kelly tell congressional panel tuesday delay u.s. president donald trump travel ban people seven muslim-majority countries refugees could brief congress executive order temporary ban ignite international protest unite state revoke 60,000 visa detain travelers land unite state unaware order sign flight desire get quick potentially people might come harm us would take advantage period time could jump airplane get kelly tell house representatives committee homeland security kelly take blame brief congress order announce late jan. 27 way delay bite could talk members congress say kelly say confusion u.s. airports cause court order challenge ban go day go effect add team department homeland security act swiftly tweak operations necessary order sign also little brief u.s. government agents responsible implement contribute confusion also agreement within administration several days whether green card holders foreign nationals seven target countries permanent u.s. residency admit white house reverse late say green card would grant waivers enter country ban suspend federal judge last friday open window refugees citizens iran iraq libya somalia sudan syria yemen enter unite state pending appeal u.s government trump executive order temporarily bar travelers seven muslim-majority countries refugees except refugees syria would ban indefinitely ban trump say need protect unite state islamist militants spark condemnation critics say discriminatory muslims question value security measure people carry fatal attack inspire islamist militancy unite state since sept. 11 2001 attack u.s. citizens legal residents new america think tank say none come unite state family emigrate one countries list travel ban say bit.ly/2kesmuo 9th u.s. circuit court appeal san francisco due hear arguments whether restore ban p.m. pst 2300 gmt kelly defend order hear assert seven countries list know inadequate systems share information unite state potentially dangerous citizens say report circulate last week 12 countries could add travel ban false add additional countries consider kelly also say fund cities refuse cooperate immigration agents would cut case-by-case basis trump threaten cut large amount federal fund 300 so-called sanctuary cities order pressure cooperate apprehension deportation illegal immigrants kelly say expect meet trump hire goals 5,000 additional u.s. customs border protection agents 10,000 immigration customs enforcement agents within two years trump specify timeline call hire executive action homeland security chief regret rapid rollout trump travel ban